Supplementary Information. Efficient Biexciton Interaction in Perovskite. Quantum Dots Under Weak and Strong. Confinement

Size: px
Start display at page:

Download "Supplementary Information. Efficient Biexciton Interaction in Perovskite. Quantum Dots Under Weak and Strong. Confinement"

Transcription

1 Supplementary Information Efficient Biexciton Interaction in Perovskite Quantum Dots Under Weak and Strong Confinement Juan A. Castañeda, Gabriel Nagamine, Emre Yassitepe, Luiz G. Bonato, Oleksandr Voznyy, Sjoerd Hoogland, Ana F. Nogueira, Edward H. Sargent, Carlos H. Brito Cruz, and Lazaro A. Padilha * Instituto de Fisica GlebWataghin, Universidade Estadual de Campinas, UNICAMP, P.O. Box 6165, Campinas, Sao Paulo, Brazil Instituto de Quimica, Universidade Estadual de Campinas, UNICAMP, P.O. Box 6154, Campinas, Sao Paulo, Brazil Department of Electrical and Computer Engineering, University of Toronto, 10 Kings College Road Toronto, Ontario M5S 3G4, Canada padilha@ifi.unicamp.br 1

2 Sample preparation CsPbX3 PQDs are prepared in a similar fashion as reported in Protesescu et al (Ref). First a stock Cesium oleate solution is prepared by loading flask with gr Cs2CO3 with 3 ml oleic acid and 40 ml Octadecene. The contents were placed under vacuum and heated to 100 C for 30 minutes. The flask is purged with Nitrogen and heated to 130 C to complete the formation of Cesium oleate. Typically PbX2 (0.19 mmol), 0.5 ml oleic acid and oleylamine and 5 ml Octadecene is added in to reaction flask. The flask is placed under vacuum and heated to 90 C until PbX2 is completely solubilized. The flask is cycled with Nitrogen and vacuum 3 times and finally placed under Nitrogen. To tune the nanocrystal size this mixture is heated to 140C-200 C where preheated Cesium oleate solution (0.4ml) is injected. Upon injection the solution takes bright color and the flask is placed in ice/water bath. Figure S. 1 TEM images for bromide and iodide PQDs 2

3 TEM images for some of the samples is shown in Fig. S1. For larger PQDs we could obtain very clear TEM images. However, for smaller nanoparticles the data did not show the same good resolution. Using the sizes that we were able to measure, we could plot the volume dependence of the absorption cross section at 3.1 ev. The relation between these two variables is shown in Fig. S2. Volume (nm 3 ) Cross Section (10-15 cm 2 ) Figure S. 2 PQDs volume as a function of the absorption cross section at 3.1 ev. The closed squares are bromide PQDs and the open circles are iodide ones. Poisson Statistics Used to Obtain the Absorption Cross Section Considering one single PQD, we can assume that the number of photons absorbed by one PQD is small, i.e., γ 1. For such events, we can use Poisson statistics to describe the 3

4 probability of each PQD absorb γ photons if the ensemble average of absorbed photons is N = N Photons σ 3.1eV, where N Photons is density of photons per pulse per area and σ 3.1eV is the absorption cross-section. This probability is given by P(γ) = N γ e N γ! At early times, right after the photo-excitation, at the band-edge, each PQDs is populated with up to 2 excitons. Those PQDs that have absorbed only one photon contribute only once to the bleaching. All the others that have absorbed at least 2 photons will contribute twice to the bleaching. Consequently, the magnitude of the early delay signal is given by C = P(1) + 2x(P(2) + P(3) ) After all the multi-excitons have decayed (due to Auger recombination), each excited PQD is left with only one exciton and the contribute equally to the signal, so which can be rewritten as B = P(1) + P(2) + P(3), B = 1 P(0) = 1 e N = 1 e N Photonsσ 3.1eV Since the measured signal depends on the PQDs concentration on the ensemble, we can multiply the above equation by B 0, which is the B saturation magnitude, consequently, Similarly, we can write C as B = B 0 (1 e N Photonsσ 3.1eV ) C = B + A where A corresponds to the fast component only, i.e., corresponds to the PQDs that have absorbed at least 2 photons. Similarly to what we have done for B, we can write A as, 4

5 A = A 0 (1 P(0) P(1)) = A 0 (1 e N N e N ) = A 0 (1 e N Photonsσ 3.1eV )(1 + N Photons σ 3.1eV ) Time-Resolved Photoluminescence and Cross Section Measurement Time-resolved photoluminescence has been used to measure the emission lifetime and the absorption cross section for most of the samples investigated in this work. The measurements were done with a Time-Correlated Single Photon Counting (TCSPC) from Horiba-Jobin Yvon, which has resolution of about 100 ps. Measurements were performed with excitation at 3.1 ev for bromide and 2.3 ev for most of the iodide PQDs. The excitation density was typically changed by two orders of magnitude. Figure S3 shows examples of intensity dependent transient photoluminescence for CsPbBr3 and the fitting to obtain the absorption cross-section. Figure S. 3 a) Transient photoluminescence for PQDs. b) The Poisson statistic fitting to the amplitude measured after the multi-exciton decay is shown for the bromide sample. Trion Influence 5

6 Photo-ionization is a typical problem in semiconductor nanocrystals when they are excited with high energy photons. Photo-ionized species are characterized by Auger recombination from trions, which should be about 4-5 times slower than Auger recombination for biexcitons. As pointed out in the main text, we observed the presence of trions at high excitation regime. Nevertheless, those trions occurs in only a small fraction of our PQDs (according to our data it is less than 10%). Figure S4 shows the intensity dependence transient absorption for a sample of CsPbBr3 for which the excitation was chosen to be as high as about 7 excitons per PQD. From that figure, it is clear that the plateau at long delay (~200 ps), observed for lower excitation intensities, is replaced by a decay slower than the biexciton. In Figure S4b we can see the influence of trions with lifetime of about 180 ps, about 5 times longer than the ~35 ps measured for the biexciton. The value measured for the biexciton agrees with the one reported in Ref. 1. Figure S. 4 a) Intensity dependence of the transient absorption for CsPbBr3 PQDs with the largest measured cross-section showing a different dynamics for the highest excitation intensity. b) Multiexciton dynamics for the highest excitation (<N> ~ 6.5) with two very clear decay times. The slower decay is about 5 times longer than the biexciton decay lifetime. 1 Makarov, N. S.; Guo, S.; Isaienko, O.; Liu, W.; Robel, I.; Klimov, V. I., Spectral and Dynamical Properties of Single Excitons, Biexcitons, and Trions in Cesium Lead-Halide Perovskite Quantum Dots. Nano Lett. 2016, 16,

Unravelling the Origin of Operational Instability of Quantum Dot based Light- Emitting Diodes

Unravelling the Origin of Operational Instability of Quantum Dot based Light- Emitting Diodes Supporting Information Unravelling the Origin of Operational Instability of Quantum Dot based Light- Emitting Diodes Jun Hyuk Chang, 1 Philip Park, 2 Heeyoung Jung, 3 Byeong Guk Jeong, 4 Donghyo Hahm,

More information

Supporting Information. Material Dimensionality Effects on Electron Transfer Rates between CsPbBr 3 and CdSe Nanoparticles

Supporting Information. Material Dimensionality Effects on Electron Transfer Rates between CsPbBr 3 and CdSe Nanoparticles Supporting Information Material Dimensionality Effects on Electron Transfer Rates between CsPbBr 3 and CdSe Nanoparticles Alexandra Brumberg, 1 Benjamin T. Diroll, 2 Georgian Nedelcu, 3,4 Matthew E. Sykes,

More information

Supporting Information

Supporting Information Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 2015 Supporting Information All inorganic cesium lead halide perovskite nanocrystals for photodetector

More information

Tianle Guo, 1 Siddharth Sampat, 1 Kehao Zhang, 2 Joshua A. Robinson, 2 Sara M. Rupich, 3 Yves J. Chabal, 3 Yuri N. Gartstein, 1 and Anton V.

Tianle Guo, 1 Siddharth Sampat, 1 Kehao Zhang, 2 Joshua A. Robinson, 2 Sara M. Rupich, 3 Yves J. Chabal, 3 Yuri N. Gartstein, 1 and Anton V. SUPPLEMENTARY INFORMATION for Order of magnitude enhancement of monolayer MoS photoluminescence due to near-field energy influx from nanocrystal films Tianle Guo, Siddharth Sampat, Kehao Zhang, Joshua

More information

Supporting Information. A Facile Methodology for Engineering the Morphology of CsPbX 3 Perovskite Nanocrystals under Ambient Condition

Supporting Information. A Facile Methodology for Engineering the Morphology of CsPbX 3 Perovskite Nanocrystals under Ambient Condition Supporting Information A Facile Methodology for Engineering the Morphology of CsPbX 3 Perovskite Nanocrystals under Ambient Condition Sudipta Seth and Anunay Samanta School of Chemistry, University of

More information

Tailoring the energy landscape in quasi-2d halide. perovskites enables efficient green light emission

Tailoring the energy landscape in quasi-2d halide. perovskites enables efficient green light emission Supporting Information Tailoring the energy landscape in quasi-2d halide perovskites enables efficient green light emission Li Na Quan, 1,2 Yongbiao Zhao, 3 F. Pelayo García de Arquer, 1 Randy Sabatini,

More information

Supporting Information for: Heavy-Metal-Free Fluorescent ZnTe/ZnSe Nanodumbbells

Supporting Information for: Heavy-Metal-Free Fluorescent ZnTe/ZnSe Nanodumbbells Supporting Information for: Heavy-Metal-Free Fluorescent ZnTe/ZnSe Nanodumbbells Botao Ji, Yossef E. Panfil and Uri Banin * The Institute of Chemistry and Center for Nanoscience and Nanotechnology, The

More information

10.6% Certified Colloidal Quantum Dot Solar Cells via Solvent-Polarity-Engineered Halide Passivation

10.6% Certified Colloidal Quantum Dot Solar Cells via Solvent-Polarity-Engineered Halide Passivation 10.6% Certified Colloidal Quantum Dot Solar Cells via Solvent-Polarity-Engineered Halide Passivation Xinzheng Lan, Oleksandr Voznyy, F. Pelayo García de Arquer, Mengxia Liu, Jixian Xu, Andrew H. Proppe,

More information

Amine-Free Synthesis of Cesium Lead Halide Perovskite Quantum Dots for Efficient Light- Emitting Diodes

Amine-Free Synthesis of Cesium Lead Halide Perovskite Quantum Dots for Efficient Light- Emitting Diodes TSpace Research Repository tspace.library.utoronto.ca Amine-Free Synthesis of Cesium Lead Halide Perovskite Quantum Dots for Efficient Light- Emitting Diodes Emre Yassitepe, Zhenyu Yang, Oleksandr Voznyy,

More information

Intensity / a.u. 2 theta / deg. MAPbI 3. 1:1 MaPbI 3-x. Cl x 3:1. Supplementary figures

Intensity / a.u. 2 theta / deg. MAPbI 3. 1:1 MaPbI 3-x. Cl x 3:1. Supplementary figures Intensity / a.u. Supplementary figures 110 MAPbI 3 1:1 MaPbI 3-x Cl x 3:1 220 330 0 10 15 20 25 30 35 40 45 2 theta / deg Supplementary Fig. 1 X-ray Diffraction (XRD) patterns of MAPbI3 and MAPbI 3-x Cl

More information

Stark Effect and Environment Induced Modulation of Emission in Single Halide Perovskite Nanocrystals

Stark Effect and Environment Induced Modulation of Emission in Single Halide Perovskite Nanocrystals Stark Effect and Environment Induced Modulation of Emission in Single Halide Perovskite Nanocrystals Dharmendar Kumar Sharma* 1, Shuzo Hirata 2, Vasudevanpillai Biju 3, Martin Vacha* 1 1 Department of

More information

Electronic Supplementary Information

Electronic Supplementary Information Electronic Supplementary Material (ESI) for Dalton Transactions. This journal is The Royal Society of Chemistry 2017 Electronic Supplementary Information All-inorganic perovskite quantum dot/mesoporous

More information

Size-Dependent Biexciton Quantum Yields and Carrier Dynamics of Quasi-

Size-Dependent Biexciton Quantum Yields and Carrier Dynamics of Quasi- Supporting Information Size-Dependent Biexciton Quantum Yields and Carrier Dynamics of Quasi- Two-Dimensional Core/Shell Nanoplatelets Xuedan Ma, Benjamin T. Diroll, Wooje Cho, Igor Fedin, Richard D. Schaller,

More information

Synthesis of Formamidinium Lead Halide Perovskite Nanocrystals through Solid-Liquid-Solid Cation Exchange

Synthesis of Formamidinium Lead Halide Perovskite Nanocrystals through Solid-Liquid-Solid Cation Exchange Electronic Supplementary Material (ESI) for Journal of Materials Chemistry C. This journal is The Royal Society of Chemistry 2017 Synthesis of Formamidinium Lead Halide Perovskite Nanocrystals through

More information

(002)(110) (004)(220) (222) (112) (211) (202) (200) * * 2θ (degree)

(002)(110) (004)(220) (222) (112) (211) (202) (200) * * 2θ (degree) Supplementary Figures. (002)(110) Tetragonal I4/mcm Intensity (a.u) (004)(220) 10 (112) (211) (202) 20 Supplementary Figure 1. X-ray diffraction (XRD) pattern of the sample. The XRD characterization indicates

More information

Single Photon Emission from Single Perovskite Nanocrystals of Cesium Lead Bromide

Single Photon Emission from Single Perovskite Nanocrystals of Cesium Lead Bromide 1 Single Photon Emission from Single Perovskite Nanocrystals of Cesium Lead Bromide Fengrui Hu, 1 Huichao Zhang, 1,3 Chun Sun, 2 Chunyang Yin, 1 Bihu Lv, 1 Chunfeng Zhang, 1 William W. Yu, 2 Xiaoyong Wang,

More information

Charge Transfer from n-doped Nanocrystals: Mimicking Intermediate Events in Multielectron Photocatalysis

Charge Transfer from n-doped Nanocrystals: Mimicking Intermediate Events in Multielectron Photocatalysis Supporting Information for: Charge Transfer from n-doped Nanocrystals: Mimicking Intermediate Events in Multielectron Photocatalysis Junhui Wang, Tao Ding and Kaifeng Wu * State Key Laboratory of Molecular

More information

Supplementary Figure 1 Transient absorption (TA) spectrum pumped at 400 nm in the FAPbI3 sample with different excitation intensities and initial

Supplementary Figure 1 Transient absorption (TA) spectrum pumped at 400 nm in the FAPbI3 sample with different excitation intensities and initial Supplementary Figure 1 Transient absorption (TA) spectrum pumped at 400 nm in the FAPbI3 sample with different excitation intensities and initial carrier concentrations: (a) N0 = 4.84 10 18 cm -3 ; (c)

More information

Supplementary Figure 1: (a) Upconversion emission spectra of the NaYF 4 4 core shell shell nanoparticles as a function of Tm

Supplementary Figure 1: (a) Upconversion emission spectra of the NaYF 4 4 core shell shell nanoparticles as a function of Tm Supplementary Figure 1: (a) Upconversion emission spectra of the NaYF 4 @NaYbF 4 :Tm(x%) @NaYF 4 core shell shell nanoparticles as a function of Tm 3+ content in the inner shell layer. The spectra were

More information

Halide-Rich Synthesized Cesium Lead Bromide Perovskite Nanocrystals for Light-Emitting Diodes with Improved Performance

Halide-Rich Synthesized Cesium Lead Bromide Perovskite Nanocrystals for Light-Emitting Diodes with Improved Performance Supporting Information Halide-Rich Synthesized Cesium Lead Bromide Perovskite Nanocrystals for Light-Emitting Diodes with Improved Performance Peizhao Liu,, #, Wei Chen,, #, Weigao Wang, Bing Xu, Dan Wu,

More information

Multiple Exciton Generation in Quantum Dots. James Rogers Materials 265 Professor Ram Seshadri

Multiple Exciton Generation in Quantum Dots. James Rogers Materials 265 Professor Ram Seshadri Multiple Exciton Generation in Quantum Dots James Rogers Materials 265 Professor Ram Seshadri Exciton Generation Single Exciton Generation in Bulk Semiconductors Multiple Exciton Generation in Bulk Semiconductors

More information

Bright CuInS 2 /CdS Nanocrystal Phosphors for High-Gain Full-Spectrum Luminescent Solar Concentrators

Bright CuInS 2 /CdS Nanocrystal Phosphors for High-Gain Full-Spectrum Luminescent Solar Concentrators Electronic Supplementary Material (ESI) for ChemComm. This journal is The Royal Society of Chemistry 215 Knowles et al. March 8, 215 Supplementary Information Bright Nanocrystal Phosphors for High-Gain

More information

Supplementary Figures

Supplementary Figures Supplementary Figures Supplementary Figure. X-ray diffraction pattern of CH 3 NH 3 PbI 3 film. Strong reflections of the () family of planes is characteristics of the preferred orientation of the perovskite

More information

Efficient Inorganic Perovskite Light-Emitting Diodes with Polyethylene Glycol Passivated Ultrathin CsPbBr 3 Films

Efficient Inorganic Perovskite Light-Emitting Diodes with Polyethylene Glycol Passivated Ultrathin CsPbBr 3 Films Supporting information Efficient Inorganic Perovskite Light-Emitting Diodes with Polyethylene Glycol Passivated Ultrathin CsPbBr 3 Films Li Song,, Xiaoyang Guo, *, Yongsheng Hu, Ying Lv, Jie Lin, Zheqin

More information

Quantum Dots for Advanced Research and Devices

Quantum Dots for Advanced Research and Devices Quantum Dots for Advanced Research and Devices spectral region from 450 to 630 nm Zero-D Perovskite Emit light at 520 nm ABOUT QUANTUM SOLUTIONS QUANTUM SOLUTIONS company is an expert in the synthesis

More information

Essentially trap-free CsPbBr3 colloidal nanocrystals by post-synthetic thiocyanate surface treatment

Essentially trap-free CsPbBr3 colloidal nanocrystals by post-synthetic thiocyanate surface treatment Supporting Information for: Essentially trap-free CsPbBr3 colloidal nanocrystals by post-synthetic thiocyanate surface treatment Brent A. Koscher 1,3,4, Joseph K. Swabeck 1,3,4, Noah D. Bronstein 1,3,4,

More information

Supporting Information for: Tailoring ZnSe-CdSe Colloidal Quantum Dots via. Cation-Exchange: from Core/Shell to Alloy.

Supporting Information for: Tailoring ZnSe-CdSe Colloidal Quantum Dots via. Cation-Exchange: from Core/Shell to Alloy. Supporting Information for: Tailoring ZnSe-CdSe Colloidal Quantum Dots via Cation-Exchange: from Core/Shell to Alloy Nanocrystals Esther Groeneveld, Leon Witteman, Merel Lefferts, Xiaoxing Ke, Sara Bals,

More information

Supporting Information:

Supporting Information: Electronic Supplementary Material (ESI) for Nanoscale. This journal is The Royal Society of Chemistry 2017 Supporting Information: Single Component Mn-doped Perovskite-related CsPb 2 Cl x Br 5-x Nanoplatelets

More information

Colloidal CsX (X = Cl, Br, I) Nanocrystals and their Transformation to CsPbX 3 Nanocrystals by Cation Exchange

Colloidal CsX (X = Cl, Br, I) Nanocrystals and their Transformation to CsPbX 3 Nanocrystals by Cation Exchange Supporting Information for: Colloidal CsX (X = Cl, Br, I) Nanocrystals and their Transformation to CsPbX 3 Nanocrystals by Cation Exchange Javad Shamsi,, Zhiya Dang, Palvasha Ijaz,, Ahmed L. Abdelhady,

More information

Supporting Information

Supporting Information Supporting Information Enabling Förster Resonance Energy Transfer from Large Nanocrystals through Energy Migration Renren Deng,,# Juan Wang,,# Runfeng Chen, Wei Huang,*,, and Xiaogang Liu*,, Փ Department

More information

SUPPLEMENTARY INFORMATION

SUPPLEMENTARY INFORMATION SUPPLEMENTARY INFORMATION DOI: 10.1038/NNANO.2012.63 Bright infrared quantum-dot light-emitting diodes through inter-dot spacing control Liangfeng Sun, Joshua J. Choi, David Stachnik, Adam C. Bartnik,

More information

SUPPLEMENTARY INFORMATION

SUPPLEMENTARY INFORMATION doi:10.1038/nature12036 We provide in the following additional experimental data and details on our demonstration of an electrically pumped exciton-polariton laser by supplementing optical and electrical

More information

SUPPLEMENTARY INFORMATION

SUPPLEMENTARY INFORMATION Supporting online material SUPPLEMENTARY INFORMATION doi: 0.038/nPHYS8 A: Derivation of the measured initial degree of circular polarization. Under steady state conditions, prior to the emission of the

More information

Spectroscopy of. Semiconductors. Luminescence OXFORD IVAN PELANT. Academy ofsciences of the Czech Republic, Prague JAN VALENTA

Spectroscopy of. Semiconductors. Luminescence OXFORD IVAN PELANT. Academy ofsciences of the Czech Republic, Prague JAN VALENTA Luminescence Spectroscopy of Semiconductors IVAN PELANT Institute ofphysics, v.v.i. Academy ofsciences of the Czech Republic, Prague JAN VALENTA Department of Chemical Physics and Optics Charles University,

More information

Electronic Supplementary Information (ESI)

Electronic Supplementary Information (ESI) Electronic Supplementary Material (ESI) for Journal of Materials Chemistry C. This journal is The Royal Society of Chemistry 2017 Electronic Supplementary Information (ESI) Influence of Ligand Shell Ordering

More information

Supporting Information for. Long-Distance Charge Carrier Funneling in Perovskite Nanowires Enable by Built-in Halide Gradient

Supporting Information for. Long-Distance Charge Carrier Funneling in Perovskite Nanowires Enable by Built-in Halide Gradient Supporting Information for Long-Distance Charge Carrier Funneling in Perovskite Nanowires Enable by Built-in Halide Gradient Wenming Tian, Jing Leng, Chunyi Zhao and Shengye Jin* State Key Laboratory of

More information

Light Absorption Coefficient of CsPbBr 3. Perovskite Nanocrystals. Supporting Information

Light Absorption Coefficient of CsPbBr 3. Perovskite Nanocrystals. Supporting Information Light Absorption Coefficient of CsPbBr 3 Perovskite Nanocrystals Supporting Information Jorick Maes,, Lieve Balcaen, Emile Drijvers,, Qiang Zhao, Jonathan De Roo,, André Vantomme, Frank Vanhaecke, Pieter

More information

Ligand Mediated Synthesis of Shape Controlled Cesium Lead Halide Perovskite Nanocrystals via Reprecipitation Process at Room Temperature

Ligand Mediated Synthesis of Shape Controlled Cesium Lead Halide Perovskite Nanocrystals via Reprecipitation Process at Room Temperature Supporting Information for: Ligand Mediated Synthesis of Shape Controlled Cesium Lead Halide Perovskite Nanocrystals via Reprecipitation Process at Room Temperature Shibin Sun, Dan Yuan, Yuan Xu, Aifei

More information

Supporting Information: Ultrafast Excited State Transport and Decay Dynamics in Cesium Lead Mixed-Halide Perovskites

Supporting Information: Ultrafast Excited State Transport and Decay Dynamics in Cesium Lead Mixed-Halide Perovskites Supporting Information: Ultrafast Excited State Transport and Decay Dynamics in Cesium Lead MixedHalide Perovskites Casey L. Kennedy, Andrew H. Hill, Eric S. Massaro, Erik M. Grumstrup *,,. Department

More information

Supporting Information: Trap States and Their Dynamics in Organometal Halide Perovskite Nanoparticles and Bulk Crystals

Supporting Information: Trap States and Their Dynamics in Organometal Halide Perovskite Nanoparticles and Bulk Crystals Supporting Information: Trap States and Their Dynamics in Organometal Halide Perovskite Nanoparticles and Bulk Crystals Kaibo Zheng,,, * Karel Žídek, Mohamed Abdellah,,# Maria E Messing, Mohammed J. Al-

More information

Supporting Information for

Supporting Information for Electronic Supplementary Material (ESI) for Journal of Materials Chemistry C. This journal is The Royal Society of Chemistry 2018 Supporting Information for Correlating Nano Black Spots and Optical Stability

More information

Supplementary Materials

Supplementary Materials Supplementary Materials Sample characterization The presence of Si-QDs is established by Transmission Electron Microscopy (TEM), by which the average QD diameter of d QD 2.2 ± 0.5 nm has been determined

More information

Room-temperature method for coating ZnS shell on semiconductor quantum dots

Room-temperature method for coating ZnS shell on semiconductor quantum dots Electronic Supplementary Material (ESI) for Journal of Materials Chemistry C. This journal is The Royal Society of Chemistry 2014 Electronic supplementary information Room-temperature method for coating

More information

University of Louisville - Department of Chemistry, Louisville, KY; 2. University of Louisville Conn Center for renewable energy, Louisville, KY; 3

University of Louisville - Department of Chemistry, Louisville, KY; 2. University of Louisville Conn Center for renewable energy, Louisville, KY; 3 Ultrafast transient absorption spectroscopy investigations of charge carrier dynamics of methyl ammonium lead bromide (CH 3 NH 3 PbBr 3 ) perovskite nanostructures Hamzeh Telfah 1 ; Abdelqader Jamhawi

More information

Title: Ultrafast photocurrent measurement of the escape time of electrons and holes from

Title: Ultrafast photocurrent measurement of the escape time of electrons and holes from Title: Ultrafast photocurrent measurement of the escape time of electrons and holes from carbon nanotube PN junction photodiodes Authors: Nathaniel. M. Gabor 1,*, Zhaohui Zhong 2, Ken Bosnick 3, Paul L.

More information

Colloidal Mn-Doped Cesium Lead Halide Perovskite Nanoplatelets. Education and Research (IISER), Pune, , India.

Colloidal Mn-Doped Cesium Lead Halide Perovskite Nanoplatelets. Education and Research (IISER), Pune, , India. Colloidal Mn-Doped Cesium Lead Halide Perovskite Nanoplatelets Wasim J. Mir, Metikoti Jagadeeswararao, Shyamashis Das, Angshuman Nag,, * Department of Chemistry, and Centre for Energy Science, Indian Institute

More information

Hidden Role of Anion Exchange Reactions in Nucleation of Colloidal Nanocrystals

Hidden Role of Anion Exchange Reactions in Nucleation of Colloidal Nanocrystals Electronic Supplementary Material (ESI) for CrystEngComm. This journal is The Royal Society of Chemistry 2015 Hidden Role of Anion Exchange Reactions in Nucleation of Colloidal Nanocrystals Rekha Mahadevu,

More information

Supplementary Information Direct Observation of the Ultrafast Exciton Dissociation in Lead-iodide Perovskite by 2D Electronic Spectroscopy

Supplementary Information Direct Observation of the Ultrafast Exciton Dissociation in Lead-iodide Perovskite by 2D Electronic Spectroscopy Supplementary Information Direct Observation of the Ultrafast Exciton Dissociation in Lead-iodide Perovskite by 2D Electronic Spectroscopy Ajay Jha 1, Hong-Guang Duan 1,2,3, Vandana Tiwari 1,4, Pabitra

More information

Photocatalytic Conversion of Nitrobenzene to Aniline through Sequential Proton-Coupled One-Electron Transfers from a Cadmium Sulfide Quantum Dot

Photocatalytic Conversion of Nitrobenzene to Aniline through Sequential Proton-Coupled One-Electron Transfers from a Cadmium Sulfide Quantum Dot Supporting Information for: Photocatalytic Conversion of Nitrobenzene to Aniline through Sequential Proton-Coupled One-Electron Transfers from a Cadmium Sulfide Quantum Dot Stephen C. Jensen, Stephanie

More information

CH676 Physical Chemistry: Principles and Applications. CH676 Physical Chemistry: Principles and Applications

CH676 Physical Chemistry: Principles and Applications. CH676 Physical Chemistry: Principles and Applications CH676 Physical Chemistry: Principles and Applications Crystal Structure and Chemistry Synthesis of Tetrahexahedral Platinum Nanocrystals with High-Index Facets and High Electro-Oxidation Activity Na Tian

More information

Optically controlled spin-polarization memory effect on Mn delta-doped heterostructures

Optically controlled spin-polarization memory effect on Mn delta-doped heterostructures Optically controlled spin-polarization memory effect on Mn delta-doped heterostructures M. A. G. Balanta 1,2,*, M. J. S. P. Brasil 1, F. Iikawa 1, Udson C. Mendes 1,3, J. A. Brum 1,Yu. A. Danilov 4, M.

More information

Supporting Information

Supporting Information Supporting Information Dynamic Interaction between Methylammonium Lead Iodide and TiO 2 Nanocrystals Leads to Enhanced Photocatalytic H 2 Evolution from HI Splitting Xiaomei Wang,, Hong Wang,, Hefeng Zhang,,

More information

ULTRAFAST SPECTROSCOPY OF CHEMICALLY SYNTHESIZED SEMICONDUCTOR NANOPARTICLES

ULTRAFAST SPECTROSCOPY OF CHEMICALLY SYNTHESIZED SEMICONDUCTOR NANOPARTICLES Summerschool on SEMICONDUCTOR QUANTUM DOTS: PHYSICS AND DEVICES Monte Verità, Ascona, Switzerland Sunday September 5, to Friday September 10, 2004 ULTRAFAST SPECTROSCOPY OF CHEMICALLY SYNTHESIZED SEMICONDUCTOR

More information

Supporting Information. Radiative and Nonradiative Recombination in CuInS 2 Nanocrystals and CuInS 2 -Based Core/Shell Nanocrystals

Supporting Information. Radiative and Nonradiative Recombination in CuInS 2 Nanocrystals and CuInS 2 -Based Core/Shell Nanocrystals Supporting Information Radiative and Nonradiative Recombination in CuInS 2 Nanocrystals and CuInS 2 -Based Core/Shell Nanocrystals Anne C. Berends, Freddy T. Rabouw, Frank C.M. Spoor, Eva Bladt #, Ferdinand

More information

Supporting Information. Exciton-to-Dopant Energy Transfer in Mn-Doped Cesium Lead Halide Perovskite Nanocrystals

Supporting Information. Exciton-to-Dopant Energy Transfer in Mn-Doped Cesium Lead Halide Perovskite Nanocrystals Supporting Information Exciton-to-Dopant Energy Transfer in Mn-Doped Cesium Lead Halide Perovskite Nanocrystals David Parobek, Benjamin J. Roman, Yitong Dong, Ho Jin, Elbert Lee, Matthew Sheldon, * and

More information

Supporting Information

Supporting Information Supporting Information Light-Matter Interactions in Cesium Lead Halide Perovskite Nanowire Lasers Kidong Park, Jong Woon Lee, Jun Dong Kim, Noh Soo Han, Dong Myung Jang, Seonghyun Jeong, Jeunghee Park*,

More information

Supporting Information

Supporting Information Supporting Information Study of Diffusion Assisted Bimolecular Electron Transfer Reactions: CdSe/ZnS Core Shell Quantum Dot acts as an Efficient Electron Donor as well as Acceptor. Somnath Koley, Manas

More information

ELECTRONIC SUPPLEMENTARY INFORMATION (ESI) variable light emission created via direct ultrasonic exfoliation of

ELECTRONIC SUPPLEMENTARY INFORMATION (ESI) variable light emission created via direct ultrasonic exfoliation of Electronic Supplementary Material (ESI) for RSC Advances. This journal is The Royal Society of Chemistry 2015 ELECTRONIC SUPPLEMENTARY INFORMATION (ESI) High quantum-yield luminescent MoS 2 quantum dots

More information

Optical Science of Nano-graphene (graphene oxide and graphene quantum dot) Introduction of optical properties of nano-carbon materials

Optical Science of Nano-graphene (graphene oxide and graphene quantum dot) Introduction of optical properties of nano-carbon materials Optical Science of Nano-graphene (graphene oxide and graphene quantum dot) J Kazunari Matsuda Institute of Advanced Energy, Kyoto University Introduction of optical properties of nano-carbon materials

More information

Time resolved optical spectroscopy methods for organic photovoltaics. Enrico Da Como. Department of Physics, University of Bath

Time resolved optical spectroscopy methods for organic photovoltaics. Enrico Da Como. Department of Physics, University of Bath Time resolved optical spectroscopy methods for organic photovoltaics Enrico Da Como Department of Physics, University of Bath Outline Introduction Why do we need time resolved spectroscopy in OPV? Short

More information

Electronic Supplementary Information.

Electronic Supplementary Information. Electronic Supplementary Material (ESI) for Physical Chemistry Chemical Physics. This journal is the Owner Societies 2017 Electronic Supplementary Information. Ultrafast charge transfer dynamics pathways

More information

Optically-Pumped Ge-on-Si Gain Media: Lasing and Broader Impact

Optically-Pumped Ge-on-Si Gain Media: Lasing and Broader Impact Optically-Pumped Ge-on-Si Gain Media: Lasing and Broader Impact J. Liu 1, R. Camacho 2, X. Sun 2, J. Bessette 2, Y. Cai 2, X. X. Wang 1, L. C. Kimerling 2 and J. Michel 2 1 Thayer School, Dartmouth College;

More information

Lead Telluride Quantum Dot Solar Cells Displaying External Quantum Efficiencies Exceeding 120%

Lead Telluride Quantum Dot Solar Cells Displaying External Quantum Efficiencies Exceeding 120% Lead Telluride Quantum Dot Solar Cells Displaying External Quantum Efficiencies Exceeding 120% Marcus L. Böhm, Tom C. Jellicoe, Maxim Tabachnyk, Nathaniel J. L. K. Davis, Florencia Wisnivesky- Rocca-Rivarola,

More information

Supporting Information

Supporting Information Supporting Information Quantum Confinement-Tunable Ultrafast Charge Transfer at the PbS Quantum Dot and PCBM Fullerene Interface Ala a O. El-Ballouli, 1 Erkki Alarousu, 1 Marco Bernardi, 2 Shawkat M. Aly,

More information

SUPPORTING INFORMATION. Photo-induced electron transfer study of an organic dye anchored on the surfaces of TiO 2 nanotubes and nanoparticles

SUPPORTING INFORMATION. Photo-induced electron transfer study of an organic dye anchored on the surfaces of TiO 2 nanotubes and nanoparticles SUPPORTING INFORMATION Photo-induced electron transfer study of an organic dye anchored on the surfaces of TiO 2 nanotubes and nanoparticles Marcin Ziółek a, Ignacio Tacchini b, M. Teresa Martínez b, Xichuan

More information

Nd 3+ -Sensitized Multicolor Upconversion Luminescence from A Sandwiched Core/Shell/Shell Nanostructure

Nd 3+ -Sensitized Multicolor Upconversion Luminescence from A Sandwiched Core/Shell/Shell Nanostructure Electronic Supplementary Material (ESI) for Nanoscale. This journal is The Royal Society of Chemistry 2017 Supporting Information Nd 3+ -Sensitized Multicolor Upconversion Luminescence from A Sandwiched

More information

Supplementary Figure 1 Level structure of a doubly charged QDM (a) PL bias map acquired under 90 nw non-resonant excitation at 860 nm.

Supplementary Figure 1 Level structure of a doubly charged QDM (a) PL bias map acquired under 90 nw non-resonant excitation at 860 nm. Supplementary Figure 1 Level structure of a doubly charged QDM (a) PL bias map acquired under 90 nw non-resonant excitation at 860 nm. Charging steps are labeled by the vertical dashed lines. Intensity

More information

Supporting Information. Rubidium Doping for Enhanced Performance of Highly Efficient Formamidinium-Based Perovskite Light-Emitting Diodes

Supporting Information. Rubidium Doping for Enhanced Performance of Highly Efficient Formamidinium-Based Perovskite Light-Emitting Diodes Supporting Information Rubidium Doping for Enhanced Performance of Highly Efficient Formamidinium-Based Perovskite Light-Emitting Diodes Yifei Shi, Jun Xi,, Ting Lei, Fang Yuan, Jinfei Dai, Chenxin Ran,

More information

by Perovskite Shelling

by Perovskite Shelling Supporting Information Colloidal Quantum Dot Photovoltaics Enhanced by Perovskite Shelling Zhenyu Yang,, Alyf Janmohamed,, Xinzheng Lan, F. Pelayo García de Arquer, Oleksandr Voznyy, Emre Yassitepe, Gi-Hwan

More information

Supporting Information. Ultralow Self-Doping in 2D Hybrid Perovskite Single. Crystals

Supporting Information. Ultralow Self-Doping in 2D Hybrid Perovskite Single. Crystals Supporting Information Ultralow Self-Doping in 2D Hybrid Perovskite Single Crystals Wei Peng,,, Jun Yin, Kang-Ting Ho, Olivier Ouellette, Michele De Bastiani, Banavoth Murali,,# Omar El Tall, Chao Shen,

More information

Supplementary Figure 1 Comparison of single quantum emitters on two type of substrates:

Supplementary Figure 1 Comparison of single quantum emitters on two type of substrates: Supplementary Figure 1 Comparison of single quantum emitters on two type of substrates: a, Photoluminescence (PL) spectrum of localized excitons in a WSe 2 monolayer, exfoliated onto a SiO 2 /Si substrate

More information

Observation of charged excitons in hole-doped carbon nanotubes using photoluminescence and absorption spectroscopy

Observation of charged excitons in hole-doped carbon nanotubes using photoluminescence and absorption spectroscopy Observation of charged excitons in hole-doped carbon nanotubes using photoluminescence and absorption spectroscopy Ryusuke Matsunaga 1, Kazunari Matsuda 1, and Yoshihiko Kanemitsu 1,2 1 Institute for Chemical

More information

Functionalized Molybdenum Disulfide Nanosheets for 0D 2D Hybrid Nanostructures: Photoinduced Charge Transfer and Enhanced Photoresponse

Functionalized Molybdenum Disulfide Nanosheets for 0D 2D Hybrid Nanostructures: Photoinduced Charge Transfer and Enhanced Photoresponse Electronic Supplementary Information for Functionalized Molybdenum Disulfide Nanosheets for 0D 2D Hybrid Nanostructures: Photoinduced Charge Transfer and Enhanced Photoresponse Razi Ahmad a,b, Ritu Srivastava

More information

SUPPLEMENTARY INFORMATION

SUPPLEMENTARY INFORMATION doi:1.138/nature9829 Supplementary Information S1: Movie of the photo-induced phase transition: Figures 2b-e show four selected XUV ARPES snapshots illustrating the most pronounced changes in the course

More information

Resonantly Excited Time-Resolved Photoluminescence Study of Self-Organized InGaAs/GaAs Quantum Dots

Resonantly Excited Time-Resolved Photoluminescence Study of Self-Organized InGaAs/GaAs Quantum Dots R. Heitz et al.: PL Study of Self-Organized InGaAs/GaAs Quantum Dots 65 phys. stat. sol. b) 221, 65 2000) Subject classification: 73.61.Ey; 78.47.+p; 78.55.Cr; 78.66.Fd; S7.12 Resonantly Excited Time-Resolved

More information

Tuning the Optical Properties of Cesium Lead Halide Perovskite Nanocrystals by Anion Exchange Reactions

Tuning the Optical Properties of Cesium Lead Halide Perovskite Nanocrystals by Anion Exchange Reactions Supporting Information for: Tuning the Optical Properties of Cesium Lead Halide Perovskite Nanocrystals by Anion Exchange Reactions Quinten A. Akkerman, Valerio D Innocenzo, Sara Accornero, Alice Scarpellini,

More information

Excitonic luminescence upconversion in a two-dimensional semiconductor

Excitonic luminescence upconversion in a two-dimensional semiconductor Excitonic luminescence upconversion in a two-dimensional semiconductor Authors: Aaron M. Jones 1, Hongyi Yu 2, John R. Schaibley 1, Jiaqiang Yan 3,4, David G. Mandrus 3-5, Takashi Taniguchi 6, Kenji Watanabe

More information

Supporting Information. Intrinsic Lead Ion Emissions in Zero-dimensional Cs 4 PbBr 6 Nanocrystals

Supporting Information. Intrinsic Lead Ion Emissions in Zero-dimensional Cs 4 PbBr 6 Nanocrystals Supporting Information Intrinsic Lead Ion Emissions in Zero-dimensional Cs 4 PbBr 6 Nanocrystals Jun Yin, 1 Yuhai Zhang, 1 Annalisa Bruno, 2 Cesare Soci, 2 Osman M. Bakr, 1 Jean-Luc Brédas, 3,* Omar F.

More information

Single Photon detectors

Single Photon detectors Single Photon detectors Outline Motivation for single photon detection Semiconductor; general knowledge and important background Photon detectors: internal and external photoeffect Properties of semiconductor

More information

Supporting Information. by Wavelength-Dependent Nonlinear Optical. Spectroscopy

Supporting Information. by Wavelength-Dependent Nonlinear Optical. Spectroscopy Supporting Information Multiphoton Absorption Order of CsPbBr3 as Determined by Wavelength-Dependent Nonlinear Optical Spectroscopy Felix O. Saouma, Constantinos C. Stoumpos, Mercouri G. Kanatzidis, Yong

More information

Ligand-Stabilized Reduced-Dimensionality Perovskites

Ligand-Stabilized Reduced-Dimensionality Perovskites Ligand-Stabilized Reduced-Dimensionality Perovskites Supporting Information Li Na Quan, 1,2 Mingjian Yuan, 1 Riccardo Comin, 1 Oleksandr Voznyy, 1 Eric M. Beauregard, 1 Sjoerd Hoogland, 1 Andrei Buin,

More information

Colloidal Single-Layer Quantum Dots with Lateral Confinement Effects on 2D Exciton

Colloidal Single-Layer Quantum Dots with Lateral Confinement Effects on 2D Exciton Supporting Information Colloidal Single-Layer Quantum Dots with Lateral Confinement Effects on 2D Exciton Ho Jin,, Minji Ahn,,,, Sohee Jeong,,, Jae Hyo Han,,, Dongwon Yoo,, Dong Hee Son, *, and Jinwoo

More information

Preparation of mixed-ion and inorganic perovskite solar cells using water and isopropanol as solvents for solar cell applications

Preparation of mixed-ion and inorganic perovskite solar cells using water and isopropanol as solvents for solar cell applications Electronic Supplementary Material (ESI) for Sustainable Energy & Fuels. This journal is The Royal Society of Chemistry 217 Preparation of mixed-ion and inorganic perovskite solar cells using water and

More information

Supporting Information

Supporting Information Supporting Information A Generic Method for Rational Scalable Synthesis of Monodisperse Metal Sulfide Nanocrystals Haitao Zhang, Byung-Ryool Hyun, Frank W. Wise, Richard D. Robinson * Department of Materials

More information

Visible Light Assisted Photocatalytic Hydrogen Generation and Organic Dye Degradation by CdS Metal Oxide hybrids in presence of Graphene Oxide

Visible Light Assisted Photocatalytic Hydrogen Generation and Organic Dye Degradation by CdS Metal Oxide hybrids in presence of Graphene Oxide Visible Light Assisted Photocatalytic Hydrogen Generation and Organic Dye Degradation by CdS Metal Oxide hybrids in presence of Graphene Oxide Ziyauddin Khan, Tridip Ranjan Chetia, Anil Kumar Vardhaman,

More information

Room Temperature Single-Photon Emission from Individual Perovskite Quantum Dots

Room Temperature Single-Photon Emission from Individual Perovskite Quantum Dots Room Temperature Single-Photon Emission from Individual Perovskite Quantum Dots Young-Shin Park,, Shaojun Guo, Nikolay S. Makarov, and Victor I. Klimov*, ARTICLE Chemistry Division, Los Alamos National

More information

Multiple exciton generation in semiconductor nanocrystals: Toward efficient solar energy conversion

Multiple exciton generation in semiconductor nanocrystals: Toward efficient solar energy conversion Early View publication on www.interscience.wiley.com (issue and page numbers not yet assigned; citable using Digital Object Identifier DOI) Laser & Photon. Rev., 1 23 (2008) / DOI 10.1002/lpor.200810013

More information

Gating of Hole Transfer from Photoexcited PbS Quantum Dots to Aminoferrocene by the Ligand Shell of the Dots

Gating of Hole Transfer from Photoexcited PbS Quantum Dots to Aminoferrocene by the Ligand Shell of the Dots Gating of Hole Transfer from Photoexcited PbS Quantum Dots to Aminoferrocene by the Ligand Shell of the Dots Michał Malicki, Kathryn E. Knowles and Emily A. Weiss* E-mail: e-weiss@northwestern.edu Department

More information

dots) and max max without energies

dots) and max max without energies Supplementary Figure 1 Light-polarization-dependent the crystal b-axis. Scale bar, 25 m. (b) Polarization-dependent absorption spectra of bilayer ReS 2. (c) Corresponding spectral weights of Lorentzian

More information

Photo-Reactivity. Jerusalem, Israel. Israel

Photo-Reactivity. Jerusalem, Israel. Israel Electronic Supplementary Material (ESI) for Physical Chemistry Chemical Physics. This journal is the Owner Societies 2018 CsPbBr 3 and CH 3 NH 3 PbBr 3 Promote Visible-light Photo-Reactivity Shankar Harisingh

More information

Supporting Information

Supporting Information Supporting Information Air-Stable Surface-Passivated Perovskite Quantum Dots for Ultra-Robust, Single- and Two-Photon-Induced Amplified Spontaneous Emission Jun Pan,, Smritakshi P. Sarmah,, Banavoth Murali,,

More information

Electronic Supplementary Information

Electronic Supplementary Information Electronic Supplementary Material (ESI) for Energy & Environmental Science. This journal is The Royal Society of Chemistry 2016 Electronic Supplementary Information Photovoltaic mixed- cation lead mixed-

More information

Title: Colloidal Quantum Dots Intraband Photodetectors

Title: Colloidal Quantum Dots Intraband Photodetectors Title: Colloidal Quantum Dots Intraband Photodetectors Authors: Zhiyou Deng, Kwang Seob Jeong, and Philippe Guyot-Sionnest* Supporting Information: I. Considerations on the optimal detectivity of interband

More information

Supplementary Information

Supplementary Information Supplementary Information Marco Govoni 1, Ivan Marri 2, and Stefano Ossicini 2,3 1 Department of Physics, University of Modena and Reggio Emilia, via Campi 213/A, 41125 Modena, Italy 2 Department of Science

More information

Visualizing Carrier Diffusion in Individual Single-Crystal. Organolead Halide Perovskite Nanowires and Nanoplates

Visualizing Carrier Diffusion in Individual Single-Crystal. Organolead Halide Perovskite Nanowires and Nanoplates Supporting Information for Visualizing Carrier Diffusion in Individual Single-Crystal Organolead Halide Perovskite Nanowires and Nanoplates Wenming Tian, Chunyi Zhao,, Jing Leng, Rongrong Cui, and Shengye

More information

Materials as particle in a box models: Synthesis & optical study of CdSe quantum dots

Materials as particle in a box models: Synthesis & optical study of CdSe quantum dots Lab Week 3 Module α 2 Materials as particle in a box models: Synthesis & optical study of CdSe quantum dots Instructor: Francesco Stellacci OBJECTIVES Introduce the particle-wave duality principle Introduce

More information

Revisited Wurtzite CdSe Synthesis : a Gateway for the Versatile Flash Synthesis of Multi-Shell Quantum Dots and Rods

Revisited Wurtzite CdSe Synthesis : a Gateway for the Versatile Flash Synthesis of Multi-Shell Quantum Dots and Rods Supporting Information for Revisited Wurtzite CdSe Synthesis : a Gateway for the Versatile Flash Synthesis of Multi-Shell Quantum Dots and Rods Emile Drijvers, 1,3 Jonathan De Roo, 2 Pieter Geiregat, 1,3

More information

Supporting Information for. Modulating the Electron - Hole Interaction in a Hybrid Lead Halide. Perovskite with an Electric Field

Supporting Information for. Modulating the Electron - Hole Interaction in a Hybrid Lead Halide. Perovskite with an Electric Field Supporting Information for Modulating the Electron - Hole Interaction in a Hybrid Lead Halide Perovskite with an Electric Field Tomas Leijtens 1,2, Ajay Ram Srimath Kandada 1, Giles E. Eperon 2, Giulia

More information

Supporting Information. Femtosecond Time-Resolved Transient Absorption. Passivation Effect of PbI 2

Supporting Information. Femtosecond Time-Resolved Transient Absorption. Passivation Effect of PbI 2 Supporting Information Femtosecond Time-Resolved Transient Absorption Spectroscopy of CH 3 NH 3 PbI 3 -Perovskite Films: Evidence for Passivation Effect of PbI 2 Lili Wang a, Christopher McCleese a, Anton

More information

SUPPLEMENTARY INFORMATION

SUPPLEMENTARY INFORMATION SUPPLEMENTARY MATERIAL Towards quantum dot arrays of entangled photon emitters Gediminas Juska *1, Valeria Dimastrodonato 1, Lorenzo O. Mereni 1, Agnieszka Gocalinska 1 and Emanuele Pelucchi 1 1 Tyndall

More information