BASIC CONCEPTS on ORGANIC SEMICONDUCTORS. Marco Sampietro COURSE OVERVIEW
|
|
|
- Tiffany Hunt
- 5 years ago
- Views:
Transcription
1 Advanced Course on ORGANIC ELECRONICS Principles, devices and applications BASIC CONCEPTS on ORGANIC SEMICONDUCTORS Marco Sampietro 1 Basics on Organic Devices COURSE OVERVIEW How the organic semiconductor material is made? How charge transport takes place? How is the interaction with the external world? - photons - metal contacts - defects Which devices have been built? Which are the technologies involved? Which are the challenges of the present/future? 2 Basics on Organic Devices 1
2 CARBON ATOM 4 electrons in the external shell C 6 : 6 electrons, 1s 2 2s 2 2p 2 Medium electronegativity (tendency to share electrons rather than to catch or give ) 3 Basics on Organic Devices BONDs with CARBON ATOMS Ibridizza: sp 3 Diamond, Metano (CH 4 ) Graphane sp 2 etilene Graphene Can form planar structures with bonds (strong) on plane and bonds (lousy) out of plane 4 Basics on Organic Devices 2
3 - CONJUGATED MOLECULES electrons laying in the molecular orbitals having higher energy (HOMO) antracene Electrons strongly localized within the C nuclei Easy to be excited to an higher level (LUMO) LUMO HOMO Easy CONDUCTION in the molecular plane (delocalisation) This afternoon Beatrice Saglio 5 Basics on Organic Devices MOLECULES and. POLYMERS Phenil ring C 6 H 6 Alcuni polimeri coniugati Poly para phenilene Poly tiophene PPP PT Pentacene Today and tomorrow Beatrice Saglio * n * * S n * Tiophene ring SC 4 H 4 * PPV n * * N n * H PPy Polytiophene Poly para phenilene vinilene Poly pirrolo Powder, soluble in solvents 6 Basics on Organic Devices 3
4 ORGANIZATION IN SPACE Molecular crystal strong superposition of p z orbitals delocalisation of electrons over the full crystal Amorphous Film Molecules are feeling weak Van der Wals forces 7 Basics on Organic Devices TRASPORTO DI CARICA nei OFET TRANSPORT of CHARGE : HOPPING Low carrier mobility, set by the slowest step Tuesday afternoon Dario Natali 8 Basics on Organic Devices 4
5 CONDITIONS for CHARGE TRANSPORT Electron - Electron - Molecule charged negatively (Reduction) Neutral molecule Neutral molecule POLARON because the charge distribution on the molecule is modified Reduced molecules should NOT react chemically or modify their structure! 9 Basics on Organic Devices CONDITIONS for CHARGE TRANSPORT Electron - Molecule returns neutral Molecule charged (Reduced) Neutral molecule Molecule should go back to exactly the same initial state REVERSIBLE REDUCTION Thursday morning Paolo Vacca 10 Basics on Organic Devices 5
6 TRANSISTORS Tuesday afternoon and following days Marco Sampietro Dario Natali Mario Caironi 11 Basics on Organic Devices MOLECULES and BANDS! Molecule molecular energetic levels Take origin from the atoms (in finite number) in the molecule E vac Lowest Unoccupied Molecular Orbital Work function q LUMO e - Electron affinity, Highest Occupied Molecular Orbital HOMO E g h + Ionization energy, IE For most materials the gap is in the visible!! 12 Basics on Organic Devices 6
7 METAL-SEMICONDUCTOR CONTACTS Organic semiconductors can not be doped substitutionally K Na Ca Li Mg Pb Ag Al Ti Zn Sn Cr Cu ITO Au Pd Ni Pt 2.30 ev 2.75 ev 2.87 ev 2.90 ev 3.70 ev 4.25 ev 4.26 ev 4.28 ev 4.33 ev 4.35 ev 4.42 ev 4.50 ev 4.65 ev 4.70 ev 5.10 ev 5.12 ev 5.15 ev 5.65 ev O R G A N I C S E M I C O N D U C T O R Na, Ca, Li Mg Pb, Ag, Al, Ti, Zn, Sn, Cr, Cu ITO, Au, Pd, Ni Pt Wednesday morning Dario Natali Metal LUMO HOMO 13 Basics on Organic Devices RADIATIVE RECOMBINATION : LED Hole Electron EXCITON neutral excited molecule (presence of e - - h + couple) Metallo riflettente nm Organic semiconductor Conduttore trasparente Substrate I Light Tuesday morning Marco Sampietro Collaborazione TESEO ( 2002) 14 Basics on Organic Devices 7
8 From OLED to SCREEN By LG HTL ITO R G B Thursday afternoon Marco Sampietro 15 Basics on Organic Devices WHITE OLED (WOLED) No single molecule emitting over the entire spectrum! Blend of different chromophores - V + Substrate Wednesday afternoon Marco Sampietro Wednesday afternoon TCI 16 Basics on Organic Devices 8
9 h + CHARGE PHOTOGENERATION & SOLAR CELLS Photon e - High performance Solar Cells Friday morning Annamaria Petrozza Exciton binding energies are 50meV 1eV >> kt thermal dissociation is inefficient external Electric field needed or other tricks!! Wednesday morning & Thursday afternoon Maddalena Binda Thursday afternoon Antonio Iacchetti 17 Basics on Organic Devices INK-JET or ROL-to-ROLL or Organic molecules can be deposited from solution.. jetlab 4 Table-Top FUJIFILM DIMATIX Tuesday morning Andrea Grimoldi Plastic PAni HIL HTL Polymer Substrate Layer Tuesday afternoon Mario Caironi Thickness nm ±2%. Foils processed at 3-30m/min. Konarka 18 Basics on Organic Devices 9
10 Other applications. Generation of electronic components that promise to be as easily manufactured as colorful magasines and newspapers LASERS Thursday morning Margherita Zavelani Rossi WEARABLE DEVICES Friday morning Annalisa Bonfiglio BIO APPLICATIONS Wednesday & Friday morning Maria Rosa Antoniazza 19 Basics on Organic Devices Proceedings of the IEEE, Vol. 100, May 13th, 2012, pp DOI: /JPROC Basics on Organic Devices 10
11 A ROAD paved of SUCCESS Patents up to 2011 : raw material (15,696), devices (33,831), equipment(27,685), drive circuit (13,512), packaging technique (9183) and application (4617). 21 Basics on Organic Devices 11
Semiconductor Polymer
Semiconductor Polymer Organic Semiconductor for Flexible Electronics Introduction: An organic semiconductor is an organic compound that possesses similar properties to inorganic semiconductors with hole
Organic solar cells. State of the art and outlooks. Gilles Horowitz LPICM, UMR7647 CNRS - Ecole Polytechnique
Organic solar cells. State of the art and outlooks Gilles Horowitz LPICM, UMR7647 CNRS - Ecole Polytechnique Solar energy Solar energy on earth: 75,000 tep/year 6000 times the world consumption in 2007
Plastic Electronics. Joaquim Puigdollers.
Plastic Electronics Joaquim Puigdollers Joaquim.puigdollers@upc.edu Nobel Prize Chemistry 2000 Origins Technological Interest First products.. MONOCROMATIC PHILIPS Today Future Technological interest Low
Organic Electronic Devices
Organic Electronic Devices Week 5: Organic Light-Emitting Devices and Emerging Technologies Lecture 5.5: Course Review and Summary Bryan W. Boudouris Chemical Engineering Purdue University 1 Understanding
Photovoltaics. Lecture 7 Organic Thin Film Solar Cells Photonics - Spring 2017 dr inż. Aleksander Urbaniak
Photovoltaics Lecture 7 Organic Thin Film Solar Cells Photonics - Spring 2017 dr inż. Aleksander Urbaniak Barcelona, Spain Perpignan train station, France source: pinterest Why organic solar cells? 1.
Calculating Band Structure
Calculating Band Structure Nearly free electron Assume plane wave solution for electrons Weak potential V(x) Brillouin zone edge Tight binding method Electrons in local atomic states (bound states) Interatomic
Electronic Structure and Geometry Relaxation at Excited State
Electronic Structure and Geometry Relaxation at Excited State Speaker: Chun I Wang ( 王俊壹 ) 2016.07.14 Structure-Performance Relationship Processing schemes Solvent quality Thermal annealing Blend composition
Introduction to Organic Solar Cells
Introduction to Organic Solar Cells Dr Chris Fell Solar Group Leader CSIRO Energy Technology, Newcastle, Australia Organic semiconductors Conductivity in polyacetylene 1970s Nobel Prize Alan J. Heeger
Introduction. Fang-Chung Chen Department of Photonics and Display Institute National Chiao Tung University. Organic light-emitting diodes
rganic light-emitting diodes Introduction Fang-Chung Chen Department of Photonics and Display Institute National Chiao Tung University rganic light-emitting diodes --The emerging technology LED Displays
Sébastien FORGET. Laboratoire de Physique des Lasers Université Paris Nord P13. www-lpl.univ-paris13.fr:8088/lumen/
OLEDs Basic principles, technology and applications Sébastien FORGET Laboratoire de Physique des Lasers Université Paris Nord P13 www-lpl.univ-paris13.fr:8088/lumen/ Paris Nord University (Paris 13) This
From Last Time Important new Quantum Mechanical Concepts. Atoms and Molecules. Today. Symmetry. Simple molecules.
Today From Last Time Important new Quantum Mechanical Concepts Indistinguishability: Symmetries of the wavefunction: Symmetric and Antisymmetric Pauli exclusion principle: only one fermion per state Spin
Supplementary Figures
Supplementary Figures Supplementary Figure 1 Measured versus calculated optical transitions in the CPX. The UV/Vis/NIR spectrum obtained experimentally for the 1:1 blend of 4T and F4TCNQ (red curve) is
Mesoporous titanium dioxide electrolyte bulk heterojunction
Mesoporous titanium dioxide electrolyte bulk heterojunction The term "bulk heterojunction" is used to describe a heterojunction composed of two different materials acting as electron- and a hole- transporters,
Introducing the RoVaCBE Flagship project: Roll-to-roll Vacuum-processed Carbon Based Electronics. Dr Hazel Assender, University of Oxford
Introducing the RoVaCBE Flagship project: Roll-to-roll Vacuum-processed Carbon Based Electronics Dr Hazel Assender, University of Oxford DALMATIAN TECHNOLOGY 21 st Sept 2010 1 Organic electronics Opportunity
Luminescence basics. Slide # 1
Luminescence basics Types of luminescence Cathodoluminescence: Luminescence due to recombination of EHPs created by energetic electrons. Example: CL mapping system Photoluminescence: Luminescence due to
Chapter 10: Modern Atomic Theory and the Periodic Table. How does atomic structure relate to the periodic table? 10.1 Electromagnetic Radiation
Chapter 10: Modern Atomic Theory and the Periodic Table How does atomic structure relate to the periodic table? 10.1 Electromagnetic Radiation Electromagnetic (EM) radiation is a form of energy that exhibits
Periodic Trends in Properties of Homonuclear
Chapter 8 Periodic Trends in Properties of Homonuclear Diatomic Molecules Up to now, we have discussed various physical properties of nanostructures, namely, two-dimensional - graphene-like structures:
Recap of Lecture #13: Thermodynamics III
Recap of Lecture #13: Thermodynamics III For a spontaneous process, ΔG = W max = The maximum work that can be obtained from a process at constant T and p For a non-spontaneous process, ΔG = W min = The
Free Electron Model for Metals
Free Electron Model for Metals Metals are very good at conducting both heat and electricity. A lattice of in a sea of electrons shared between all nuclei (moving freely between them): This is referred
Triplet state diffusion in organometallic and organic semiconductors
Triplet state diffusion in organometallic and organic semiconductors Prof. Anna Köhler Experimental Physik II University of Bayreuth Germany From materials properties To device applications Organic semiconductors
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
Tuning the colour and efficiency in OLEDs by using amorphous or. Electronic Supplementary Information
This journal is The Royal Society of Chemistry 23 Tuning the colour and efficiency in OLEDs by using amorphous or polycrystalline emitting layers. P. Brulatti, V. Fattori, S. Muzzioli, S. Stagni, P. P.
Free Electron Model for Metals
Free Electron Model for Metals Metals are very good at conducting both heat and electricity. A lattice of in a sea of electrons shared between all nuclei (moving freely between them): This is referred
All chemical bonding is based on the following relationships of electrostatics: 2. Each period on the periodic table
UNIT VIII ATOMS AND THE PERIODIC TABLE 25 E. Chemical Bonding 1. An ELECTROSTATIC FORCE is All chemical bonding is based on the following relationships of electrostatics: The greater the distance between
ELEMENTARY BAND THEORY
ELEMENTARY BAND THEORY PHYSICIST Solid state band Valence band, VB Conduction band, CB Fermi energy, E F Bloch orbital, delocalized n-doping p-doping Band gap, E g Direct band gap Indirect band gap Phonon
TECHNICAL INFORMATION. Quantum Dot
Quantum Dot Quantum Dot is the nano meter sized semiconductor crystal with specific optical properties originates from the phenomenon which can be explained by the quantum chemistry and quantum mechanics.
Classification of Solids
Classification of Solids Classification by conductivity, which is related to the band structure: (Filled bands are shown dark; D(E) = Density of states) Class Electron Density Density of States D(E) Examples
Basic cell design. Si cell
Basic cell design Si cell 1 Concepts needed to describe photovoltaic device 1. energy bands in semiconductors: from bonds to bands 2. free carriers: holes and electrons, doping 3. electron and hole current:
E L E C T R O P H O S P H O R E S C E N C E
Organic LEDs part 4 E L E C T R O P H O S P H O R E S C E C E. OLED efficiency 2. Spin 3. Energy transfer 4. Organic phosphors 5. Singlet/triplet ratios 6. Phosphor sensitized fluorescence 7. Endothermic
Fabrication Technology, Part I
EEL5225: Principles of MEMS Transducers (Fall 2004) Fabrication Technology, Part I Agenda: Microfabrication Overview Basic semiconductor devices Materials Key processes Oxidation Thin-film Deposition Reading:
1. Following Dalton s Atomic Theory, 2. In 1869 Russian chemist published a method. of organizing the elements. Mendeleev showed that
20 CHEMISTRY 11 D. Organizing the Elements The Periodic Table 1. Following Dalton s Atomic Theory, By 1817, chemists had discovered 52 elements and by 1863 that number had risen to 62. 2. In 1869 Russian
Physics of Organic Semiconductor Devices: Materials, Fundamentals, Technologies and Applications
Physics of Organic Semiconductor Devices: Materials, Fundamentals, Technologies and Applications Dr. Alex Zakhidov Assistant Professor, Physics Department Core faculty at Materials Science, Engineering
Chapter 1 Overview of Semiconductor Materials and Physics
Chapter 1 Overview of Semiconductor Materials and Physics Professor Paul K. Chu Conductivity / Resistivity of Insulators, Semiconductors, and Conductors Semiconductor Elements Period II III IV V VI 2 B
Towards a deeper understanding of polymer solar cells
Towards a deeper understanding of polymer solar cells Jan Anton Koster Valentin Mihailetchi Prof. Paul Blom Molecular Electronics Zernike Institute for Advanced Materials and DPI University of Groningen
Opto-electronic Characterization of Perovskite Thin Films & Solar Cells
Opto-electronic Characterization of Perovskite Thin Films & Solar Cells Arman Mahboubi Soufiani Supervisors: Prof. Martin Green Prof. Gavin Conibeer Dr. Anita Ho-Baillie Dr. Murad Tayebjee 22 nd June 2017
7 Conjugated Polymers
7 Conjugated Polymers The large majority of polymers, first of all the broadly used commodity materials polyethylene, polypropylene, poly(ethylene terephthalate) or polystyrene, have similar electrical
Chapter 6. Electronic spectra and HOMO-LUMO studies on Nickel, copper substituted Phthalocyanine for solar cell applications
Chapter 6 Electronic spectra and HOMO-LUMO studies on Nickel, copper substituted Phthalocyanine for solar cell applications 6.1 Structures of Ni, Cu substituted Phthalocyanine Almost all of the metals
lectures accompanying the book: Solid State Physics: An Introduction, by Philip ofmann (2nd edition 2015, ISBN-10: 3527412824, ISBN-13: 978-3527412822, Wiley-VC Berlin. www.philiphofmann.net 1 Bonds between
2.626 Fundamentals of Photovoltaics
MIT OpenCourseWare http://ocw.mit.edu 2.626 Fundamentals of Photovoltaics Fall 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms. Charge Separation:
CHARGE CARRIERS PHOTOGENERATION. Maddalena Binda Organic Electronics: principles, devices and applications Milano, November 23-27th, 2015
CHARGE CARRIERS PHOTOGENERATION Maddalena Binda Organic Electronics: principles, devices and applications Milano, November 23-27th, 2015 Charge carriers photogeneration: what does it mean? Light stimulus
So why is sodium a metal? Tungsten Half-filled 5d band & half-filled 6s band. Insulators. Interaction of metals with light?
Bonding in Solids: Metals, Insulators, & CHEM 107 T. Hughbanks Delocalized bonding in Solids Think of a pure solid as a single, very large molecule. Use our bonding pictures to try to understand properties.
Monolayer Semiconductors
Monolayer Semiconductors Gilbert Arias California State University San Bernardino University of Washington INT REU, 2013 Advisor: Xiaodong Xu (Dated: August 24, 2013) Abstract Silicon may be unable to
NAME: FIRST EXAMINATION
1 Chemistry 64 Winter 1994 NAME: FIRST EXAMINATION THIS EXAMINATION IS WORTH 100 POINTS AND CONTAINS 4 (FOUR) QUESTIONS THEY ARE NOT EQUALLY WEIGHTED! YOU SHOULD ATTEMPT ALL QUESTIONS AND ALLOCATE YOUR
ORGANIC SEMICONDUCTOR 3,4,9,10-Perylenetetracarboxylic dianhydride (PTCDA)
ORGANIC SEMICONDUCTOR 3,4,9,10-Perylenetetracarboxylic dianhydride (PTCDA) Suvranta Tripathy Department of Physics University of Cincinnati Cincinnati, Ohio 45221 March 8, 2002 Abstract In the last decade
Atomic Structure & Interatomic Bonding
Atomic Structure & Interatomic Bonding Chapter Outline Review of Atomic Structure Atomic Bonding Atomic Structure Atoms are the smallest structural units of all solids, liquids & gases. Atom: The smallest
EECS130 Integrated Circuit Devices
EECS130 Integrated Circuit Devices Professor Ali Javey 8/30/2007 Semiconductor Fundamentals Lecture 2 Read: Chapters 1 and 2 Last Lecture: Energy Band Diagram Conduction band E c E g Band gap E v Valence
Planar Organic Photovoltaic Device. Saiful I. Khondaker
Planar Organic Photovoltaic Device Saiful I. Khondaker Nanoscience Technology Center and Department of Physics University of Central Florida http://www.physics.ucf.edu/~khondaker W Metal 1 L ch Metal 2
Chapter 3 Engineering Science for Microsystems Design and Fabrication
Lectures on MEMS and MICROSYSTEMS DESIGN and MANUFACTURE Chapter 3 Engineering Science for Microsystems Design and Fabrication In this Chapter, we will present overviews of the principles of physical and
1. [7 points] Which element is oxidized in the reaction below? + O 2 + H 2 O
![1. [7 points] Which element is oxidized in the reaction below? + O 2 + H 2 O](/thumbs/78/77840959.jpg "1. [7 points] Which element is oxidized in the reaction below? + O 2 + H 2 O")
1. [7 points] Which element is oxidized in the reaction below? K 2 CrO 4 (aq) + BaCl 2 (aq) BaCrO 4 (s) + 2KCl a. Cl b. Cr c. O d. Ba e. This is not an oxidation-reduction reaction 2. [7 points] What are
Lesmahagow High School CfE Advanced Higher Chemistry. Unit 2 Organic Chemistry and Instrumental Analysis. Molecular Orbitals and Structure
Lesmahagow High School CfE Advanced Higher Chemistry Unit 2 Organic Chemistry and Instrumental Analysis Molecular Orbitals and Structure 1 Molecular Orbitals Orbitals can be used to explain the bonding
Surface Transfer Doping of Diamond by Organic Molecules
Surface Transfer Doping of Diamond by Organic Molecules Qi Dongchen Department of Physics National University of Singapore Supervisor: Prof. Andrew T. S. Wee Dr. Gao Xingyu Scope of presentation Overview
Review of Optical Properties of Materials
Review of Optical Properties of Materials Review of optics Absorption in semiconductors: qualitative discussion Derivation of Optical Absorption Coefficient in Direct Semiconductors Photons When dealing
Supplementary Figure 1 Experimental setup for crystal growth. Schematic drawing of the experimental setup for C 8 -BTBT crystal growth.
Supplementary Figure 1 Experimental setup for crystal growth. Schematic drawing of the experimental setup for C 8 -BTBT crystal growth. Supplementary Figure 2 AFM study of the C 8 -BTBT crystal growth
ELECTRONIC DEVICES AND CIRCUITS SUMMARY
ELECTRONIC DEVICES AND CIRCUITS SUMMARY Classification of Materials: Insulator: An insulator is a material that offers a very low level (or negligible) of conductivity when voltage is applied. Eg: Paper,
Novel Soft Materials: Organic Semiconductors
JSPS Science Dialogue Novel Soft Materials: Organic Semiconductors X.T. HAO Prof. UENO s Lab Faculty of Engineering, Chiba University 21 st Century Center of Excellence Program The route to research Transparent
SEMICONDUCTOR PHYSICS REVIEW BONDS,
SEMICONDUCTOR PHYSICS REVIEW BONDS, BANDS, EFFECTIVE MASS, DRIFT, DIFFUSION, GENERATION, RECOMBINATION February 3, 2011 The University of Toledo, Department of Physics and Astronomy SSARE, PVIC Principles
Introduction to X-ray Photoelectron Spectroscopy (XPS) XPS which makes use of the photoelectric effect, was developed in the mid-1960
Introduction to X-ray Photoelectron Spectroscopy (XPS) X-ray Photoelectron Spectroscopy (XPS), also known as Electron Spectroscopy for Chemical Analysis (ESCA) is a widely used technique to investigate
Semiconductors and Optoelectronics. Today Semiconductors Acoustics. Tomorrow Come to CH325 Exercises Tours
Semiconductors and Optoelectronics Advanced Physics Lab, PHYS 3600 Don Heiman, Northeastern University, 2017 Today Semiconductors Acoustics Tomorrow Come to CH325 Exercises Tours Semiconductors and Optoelectronics
Ch. 2: Energy Bands And Charge Carriers In Semiconductors
Ch. 2: Energy Bands And Charge Carriers In Semiconductors Discrete energy levels arise from balance of attraction force between electrons and nucleus and repulsion force between electrons each electron
From Last Time. Several important conceptual aspects of quantum mechanics Indistinguishability. Symmetry
From Last Time Several important conceptual aspects of quantum mechanics Indistinguishability particles are absolutely identical Leads to Pauli exclusion principle (one Fermion / quantum state). Symmetry
EECS143 Microfabrication Technology
EECS143 Microfabrication Technology Professor Ali Javey Introduction to Materials Lecture 1 Evolution of Devices Yesterday s Transistor (1947) Today s Transistor (2006) Why Semiconductors? Conductors e.g
Session V: Graphene. Matteo Bruna CAMBRIDGE UNIVERSITY DEPARTMENT OF ENGINEERING
Session V: Graphene Matteo Bruna Graphene: Material in the Flatland Graphite Graphene Properties: Thinnest imaginable material Good(and tunable) electrical conductor Strongest ever measured Stiffest known
Outline. Introduction: graphene. Adsorption on graphene: - Chemisorption - Physisorption. Summary
Outline Introduction: graphene Adsorption on graphene: - Chemisorption - Physisorption Summary 1 Electronic band structure: Electronic properties K Γ M v F = 10 6 ms -1 = c/300 massless Dirac particles!
Double Bond: C 2 H 4. An sp 2 hybridized C atom has one electron in each of the three sp 2 lobes
Double Bond: C 2 H 4 An sp 2 hybridized C atom has one electron in each of the three sp 2 lobes Top view of the sp 2 hybrid Side view of the sp 2 hybrid + the unhybridized p orbital 1 Double Bond: C 2
Atoms and The Periodic Table
Atoms and The Periodic Table A. Early Models of the Atom 1. The earliest models of the atom came in the 5 th century B.C. when In the 4 th century, B.C., rejected this idea and proposed that earthly matter
Lecture 16, February 25, 2015 Metallic bonding
Lecture 16, February 25, 2015 Metallic bonding Elements of Quantum Chemistry with Applications to Chemical Bonding and Properties of Molecules and Solids Course number: Ch125a; Room 115 BI Hours: 11-11:50am
Electroluminescence from Silicon and Germanium Nanostructures
Electroluminescence from silicon Silicon Getnet M. and Ghoshal S.K 35 ORIGINAL ARTICLE Electroluminescence from Silicon and Germanium Nanostructures Getnet Melese* and Ghoshal S. K.** Abstract Silicon
ET3034TUx Utilization of band gap energy
ET3034TUx - 3.3.1 - Utilization of band gap energy In the last two weeks we have discussed the working principle of a solar cell and the external parameters that define the performance of a solar cell.
Name Date Class STUDY GUIDE FOR CONTENT MASTERY. covalent bond molecule sigma bond exothermic pi bond
Covalent Bonding Section 9.1 The Covalent Bond In your textbook, read about the nature of covalent bonds. Use each of the terms below just once to complete the passage. covalent bond molecule sigma bond
8. Which of the following could be an isotope of chlorine? (A) 37 Cl 17 (B) 17 Cl 17 (C) 37 Cl 17 (D) 17 Cl 37.5 (E) 17 Cl 37
Electronic Structure Worksheet 1 Given the following list of atomic and ionic species, find the appropriate match for questions 1-4. (A) Fe 2+ (B) Cl (C) K + (D) Cs (E) Hg + 1. Has the electron configuration:
Charge separation in molecular donor acceptor heterojunctions
Institute of Physics 13 July 2009 Charge separation in molecular donor acceptor heterojunctions Jenny Nelson, James Kirkpatrick, Jarvist Frost, Panagiotis Keivanidis, Clare Dyer-Smith, Jessica Benson-Smith
EE143 Fall 2016 Microfabrication Technologies. Evolution of Devices
EE143 Fall 2016 Microfabrication Technologies Prof. Ming C. Wu wu@eecs.berkeley.edu 511 Sutardja Dai Hall (SDH) 1-1 Evolution of Devices Yesterday s Transistor (1947) Today s Transistor (2006) 1-2 1 Why
Topic 3: Periodicity OBJECTIVES FOR TODAY: Fall in love with the Periodic Table, Interpret trends in atomic radii, ionic radii, ionization energies &
Topic 3: Periodicity OBJECTIVES FOR TODAY: Fall in love with the Periodic Table, Interpret trends in atomic radii, ionic radii, ionization energies & electronegativity The Periodic Table What is the periodic
Harvesting Heat through Seebeck Spin Tunneling Effect
Harvesting Heat through Seebeck Spin Tunneling Effect Costel Constantin James Madison University Science Enabled by Photon Source, May 2012 Outline 1. Spintronics vs. Spin Caloritronics. 2. Novel Spin
Atmospheric pressure Plasma Enhanced CVD for large area deposition of TiO 2-x electron transport layers for PV. Heather M. Yates
Atmospheric pressure Plasma Enhanced CVD for large area deposition of TiO 2-x electron transport layers for PV Heather M. Yates Why the interest? Perovskite solar cells have shown considerable promise
General Chemistry I (2012) Lecture by B. H. Hong
3.8 The Limitations of Lewis's Theory 3.9 Molecular Orbitals The valence-bond (VB) and molecular orbital (MO) theories are both procedures for constructing approximate wavefunctions of electrons. The MO
How does a polymer LED OPERATE?
How does a polymer LED OPERATE? Now that we have covered many basic issues we can try and put together a few concepts as they appear in a working device. We start with an LED:. Charge injection a. Hole
organic semiconductors Henning Sirringhaus
Charge transport physics of highmobility organic semiconductors Henning irringhaus Organic electronics tatus and opportunities OLED Existing markets Emerging applications Advanced prototypes Next generation
PH575 Spring Lecture #20 Semiconductors: optical properties: Kittel Ch. 8 pp ; Ch 15 pp
PH575 Spring 2014 Lecture #20 Semiconductors: optical properties: Kittel Ch. 8 pp. 187-191; Ch 15 pp. 435-444 Figure VI-1-1: Different types of optical absorption phenomena; (1) transitions of highlying
MTLE-6120: Advanced Electronic Properties of Materials. Intrinsic and extrinsic semiconductors. Reading: Kasap:
MTLE-6120: Advanced Electronic Properties of Materials 1 Intrinsic and extrinsic semiconductors Reading: Kasap: 5.1-5.6 Band structure and conduction 2 Metals: partially filled band(s) i.e. bands cross
Conjugated Polymers Based on Benzodithiophene for Organic Solar Cells. Wei You
Wake Forest Nanotechnology Conference October 19, 2009 Conjugated Polymers Based on Benzodithiophene for Organic olar Cells Wei You Department of Chemistry and Institute for Advanced Materials, Nanoscience
Flexible Organic Photovoltaics Employ laser produced metal nanoparticles into the absorption layer 1. An Introduction
Flexible Organic Photovoltaics Employ laser produced metal nanoparticles into the absorption layer 1. An Introduction Among the renewable energy sources that are called to satisfy the continuously increased
4.1 Atomic structure and the periodic table. GCSE Chemistry
4.1 Atomic structure and the periodic table GCSE Chemistry All substances are made of atoms this is cannot be chemically broken down it is the smallest part of an element. Elements are made of only one
Crystal Properties. MS415 Lec. 2. High performance, high current. ZnO. GaN
Crystal Properties Crystal Lattices: Periodic arrangement of atoms Repeated unit cells (solid-state) Stuffing atoms into unit cells Determine mechanical & electrical properties High performance, high current
Supplementary information for the paper
Supplementary information for the paper Structural correlations in the generation of polaron pairs in lowbandgap polymers for photovoltaics Supplementary figures Chemically induced OD 0,1 0,0-0,1 0,1 0,0-0,1
The photovoltaic effect occurs in semiconductors where there are distinct valence and
How a Photovoltaic Cell Works The photovoltaic effect occurs in semiconductors where there are distinct valence and conduction bands. (There are energies at which electrons can not exist within the solid)
Electrons are shared in covalent bonds between atoms of Si. A bound electron has the lowest energy state.
Photovoltaics Basic Steps the generation of light-generated carriers; the collection of the light-generated carriers to generate a current; the generation of a large voltage across the solar cell; and
OLEDs and PLEDs Nele Schumacher Incoherent Lightsources - Prof. Thomas Jüstel
OLEDs and PLEDs 28.5.2014 Nele Schumacher Incoherent Lightsources - Prof. Thomas Jüstel Contents 1. History 2. Working principle 4. Preparation of multilayer devices 5. Advantages and disadvantages 6.
Predicting LA-LB reactions
Predicting LA-LB reactions A chemical reaction is governed by G rxn
Self Assembled Monolayers
Nanotechnology for engineers Winter semester 2005-2006 Plastic Electronics - Self Assembled Monolayers - Organic Materials Based Devices - Organic photovoltaic devices Nanotechnology for engineers Winter
Semiconductors. SEM and EDAX images of an integrated circuit. SEM EDAX: Si EDAX: Al. Institut für Werkstoffe der ElektrotechnikIWE
SEM and EDAX images of an integrated circuit SEM EDAX: Si EDAX: Al source: [Cal 99 / 605] M&D-.PPT, slide: 1, 12.02.02 Classification semiconductors electronic semiconductors mixed conductors ionic conductors
Bonding/Lewis Dots Lecture Page 1 of 12 Date. Bonding. What is Coulomb's Law? Energy Profile: Covalent Bonds. Electronegativity and Linus Pauling
Bonding/Lewis Dots Lecture Page 1 of 12 Date Bonding What is Coulomb's Law? Energy Profile: Covalent Bonds Electronegativity and Linus Pauling 2.1 H 1.0 Li 0.9 Na 0.8 K 0.8 Rb 0.7 Cs 0.7 Fr 1.5 Be 1.2
Chapter 12: Semiconductors
Chapter 12: Semiconductors Bardeen & Shottky January 30, 2017 Contents 1 Band Structure 4 2 Charge Carrier Density in Intrinsic Semiconductors. 6 3 Doping of Semiconductors 12 4 Carrier Densities in Doped
Australian Journal of Basic and Applied Sciences
AENSI Journals Australian Journal of Basic and Applied Sciences ISSN:1991-8178 Journal home page: www.ajbasweb.com Theoretical Study for the Effect of Hydroxyl Radical on the Electronic Properties of Cyclobutadiene
Organic semiconductor heterointerfaces containing bathocuproine
JOURNAL OF APPLIED PHYSICS VOLUME 86, NUMBER 8 15 OCTOBER 1999 Organic semiconductor heterointerfaces containing bathocuproine I. G. Hill a) and A. Kahn Department of Electrical Engineering, Princeton
Senior Project Thesis Senior Project Committee, Department of Physics, Case Western Reserve University
Liquid Crystal Semiconductor Nanostructures Richard Metzger,Department of Physics, Case Western Reserve University Nick Lind, Department of Physics, Case Western Reserve University Professor K. Singer,
Supporting Information: Poly(dimethylsiloxane) Stamp Coated with a. Low-Surface-Energy, Diffusion-Blocking,
Supporting Information: Poly(dimethylsiloxane) Stamp Coated with a Low-Surface-Energy, Diffusion-Blocking, Covalently Bonded Perfluoropolyether Layer and Its Application to the Fabrication of Organic Electronic
CHEMISTRY Topic #1: Atomic Structure and Nuclear Chemistry Fall 2017 Dr. Susan Findlay See Exercise 5.3
CHEMISTRY 1000 Topic #1: Atomic Structure and Nuclear Chemistry Fall 2017 Dr. Susan Findlay See Exercise 5.3 Periodic Trends and Effective Nuclear Charge Imagine four atoms/ions: One has a nucleus with
Organic Electronics. MatWi II summer term Priv. Doz. Bert Nickel
Organic Electronics MatWi II summer term 2018 Introduction: Organic electronics Fabrication and characterization of organic thin films Devices: solar cells, OLEDs, OFETs blackboard part: OFET Priv. Doz.
Chapter 3: Elements and Compounds. 3.1 Elements
Chapter 3: Elements and Compounds 3.1 Elements An element is a fundamental substance that cannot be broken down by chemical or physical methods to simpler substances. The 118 known elements are nature