Structural, optical and excitonic properties of MAxCs1-xPb(IxBr1-x)3 alloy thin films and their application in solar cells

被引：28
作者：
Chang, Sheng Hsiung [1 ,2 ]
Tseng, Pin-Chia [3 ]
Chiang, Shou-En [1 ,2 ]
Wu, Jia-Ren [1 ,2 ]
Chen, Yan-Ta [1 ,2 ]
Chen, Ching-Ju [3 ]
Yuan, Chi-Tsu [1 ,2 ]
Chen, Sheng-Hui [3 ]
机构：
[1] Chung Yuan Christian Univ, Dept Phys, R&D Ctr Membrane Technol, Taoyuan 32023, Taiwan
[2] Chung Yuan Christian Univ, Ctr Nanotechnol, Taoyuan 32023, Taiwan
[3] Natl Cent Univ, Dept Opt & Photon, Taoyuan 32001, Taiwan
来源：
SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2020年 / 210卷
关键词：
MA(x)Cs(1-x)Pb(IxBr1-x)(3); Stable perovskite solar cells; Time-dependent photoluminescence; OPEN-CIRCUIT VOLTAGE; HIGH-PERFORMANCE; HALIDE PEROVSKITES; EFFICIENT; IMPACT; LAYER; H2O; CL;
D O I：
10.1016/j.solmat.2020.110478
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The structural, optical and excitonic characteristics of MA(x)Cs(1-x)Pb(IxBr1-x)(3) crystal thin films were investigated by using the X-ray diffraction patterns, scanning electron microscopic images, absorbance spectra and photo-luminescence (PL) spectra. The time-dependent PL spectra shows that the MA(0.8)Cs(0.2)Pb(I0.8Br0.2) 3 crystal thin film is a photo-stable light absorbing material, which results in an efficient and stable perovskite solar cell without the additional encapsulation. The highest power conversion efficiency (PCE) of MA(0.8)Cs(0.2)Pb(I0.8Br0.2)(3) solar cells is 10.02%. In addition, the PCE decreases slowly toward a stable value (5.71%) for more than 120 days under moderate environment conditions (55-60 RH%).
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页数：8
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