Supplementary Information. High-Performance Mixed-Dimensional Perovskite Solar Cells with Enhanced

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1 Eletroni Supplementry Mteril (ESI) for Journl of Mterils Chemistry A. This journl is The Royl Soiety of Chemistry 201 Supplementry Informtion High-Performne Mixed-Dimensionl Perovskite Solr Cells with Enhned Stility ginst Humidity, Het nd UV Light Hiying Zheng, Guozhen Liu, Xiojing Chen, Bing Zhng, d Ahmed Alsedi, Tswr Hyt, e Xu Pn,* nd Songyun Di* d Key Lortory of Photovolti nd Energy Conservtion Mterils, Institute of Applied Tehnology, Hefei Institutes of Physil Siene, Chinese Ademy of Sienes, Hefei , Chin. University of Siene nd Tehnology of Chin, Hefei , Chin. NAAM Reserh Group, Deprtment of Mthemtis, Fulty of Siene, King Adulziz University, Jeddh 2159, Sudi Ari. d Stte Key Lortory of Alternte Eletril Power System with Renewle Energy Soures, North Chin Eletri Power University, Beijing , Chin. e Deprtment of Mthemtis, Quid-I-Azm University, Islmd 000, Pkistn. Emil: xpn@rntek.s.n 1

2 Trnsmittne HOCH 2 CH 2 NH 2 *HI Wvenumer (m -1 ) Fig. S1. FTIR spetrum of HOCH 2 CH 2 NH 2 *HI. (Stndrd FTIR spetrum of HOCH 2 CH 2 NH 2 *HCl is shown in frme top.gi) HOCH 2 CH 2 NH 3 I (HOCH 2 CH 2 NH 3 ) 2 PI (x=1) x=20% Intensity (.u.) Intensity (.u.) Intensity (.u.) degree) degree) degree) Fig. S2. XRD ptterns of EAI, (EA) 2 PI (x=1) nd [(EA) 2 PI ] [(PI 3 ) 5 (MAPBr 3 ) 0.15 ] (x=20%) thin films. 2 Intensity (.u.) Gussin Fit degree) FWHM (degree) Conentrtion (%) Fig. S3. () The mgnified XRD ptterns with gussin fit nd () the dependene of full width t hlf mximum (FWHM) for the (110) peks. 2

3 Normlized PL (.u.) Wvelength (nm) Fig. S. Prtilly enlrged normlized PL spetr of [(EA) 2 PI ] x [(PI 3 ) 5 (MAPBr 3 ) 0.15 ] 1-x (x=0,,,, ) thin films. Fig. S5. AFM imges of [(EA) 2 PI ] x [(PI 3 ) 5 (MAPBr 3 ) 0.15 ] 1-x (x=0,,,, ) films. Counts Counts Counts J s (ma m -2 ) Voltge (V) FF (%) Fig. S6. () Short-iruit urrent density (J s ), () Open iruit voltges (V o ) nd () Fill ftor (FF) histogrm fitted with Gussin distriution of the MD (x=) perovskite devies over 30 mesured devies. 3

4 Current Density (ma m -2 ) Stedy-stte J s =20.17 ma m -2 Stedy-stte PCE=1.36% MD () Mesured t 0.91 V PCE (%) Time (s) Fig. S7. Stedy-stte mesurement of the photourrent nd PCE t the mximum power point of MD perovskite devie. PL (.u.) Wvelength (nm) Norm. PL dey (. u.) t=3.69 ns t=2.35 ns line line t=1.76 ns line t=6.6 ns line t=.2 ns line Fig. S. () PL spetr nd () TRPL dey spetr of [(EA) 2 PI ] x [(PI 3 ) 5 (MAPBr 3 ) 0.15 ] 1-x (x=0,,,, ) thin films on top of mesoporous TiO 2 lyer. DOD (.u.) Experimentl t= 115 ns - DOD (.u.) Experimentl t= 119 ns - DOD (.u.) Experimentl t= 133 ns DOD (.u.) Experimentl t= 107 ns - DOD (.u.) Experimentl t= 97 ns

5 Fig. S9. Normlized TA responses of [(EA) 2 PI ] x [(PI 3 ) 5 (MAPBr 3 ) 0.15 ] 1-x (x=0,,,, ) thin films Z'' ( Z' ( Fig. S10. Nyquist plots of [(EA) 2 PI ] x [(PI 3 ) 5 (MAPBr 3 ) 0.15 ] 1-x (x=0,,,, ) PSCs t V= V. Normlized PCE Normlized J s Normlized V o d Normlized FF Fig. S11. Normlized () PCE, () short-iruit urrent density (J s ), () open iruit voltges (V o ) nd (d) fill ftor (FF) vrition urves of unseled norml nd MD (x=,,, ) perovskite 5

6 devies under out 50% RH. Normlized PCE Normlized J s d Normlized V o Normlized FF Fig. S12. Normlized () PCE, () short-iruit urrent density (J s ), () open iruit voltges (V o ) nd (d) fill ftor (FF) vrition urves of unseled norml nd MD (x=,,, ) perovskite devies t 5 C. Normlized PCE Normlized J s d Normlized V o Normlized FF

7 Fig. S13. Normlized () PCE, () short-iruit urrent density (J s ), () open iruit voltges (V o ) nd (d) fill ftor (FF) vrition urves of unseled norml nd MD (x=,,, ) perovskite devies under ontinuous UV irrdition. MD h Intensity (.u.) h - 0 h MD - 0 h (degree) Fig. S1. XRD ptterns of the norml nd MD (x= ) perovskite films efore nd fter exposing to 5 C. Tle S1. Photovolti prmeters of the norml nd the MD (x=,,, nd 20%) perovskite solr ells. Devie J s (ma m -2 ) V o (V) FF (%) PCE (%) % Tle S2. Photovolti prmeters of the norml nd the MD (x=) perovskite devies under reverse nd forwrd sn diretions. Devie J s (ma m -2 ) V o (V) FF (%) PCE (%) -Reverse Forwrd

8 -Reverse Forwrd