Work function optimization of vacuum free top-electrode by PEDOT:PSS/PEI interaction for efficient semi-transparent perovskite solar cells

被引：38
作者：
Kim, Kang Min [1 ]
Ahn, Sunyong [2 ]
Jang, Woongsik [2 ]
Park, Soyun [2 ]
Park, O. Ok [1 ]
Wang, Dong Hwan [2 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Program BK21, 291 Daehak Ro, Daejeon 305701, South Korea
[2] Chung Ang Univ, Sch Integrat Engn, 84 Heukseok Ro, Seoul 156756, South Korea
来源：
SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2018年 / 176卷
基金：
新加坡国家研究基金会;
关键词：
Perovskite photovoltaic cells; Stamping transfer; Semi-transparent; Polyethylenimine; Work function; Vacuum free; INTERLAYER;
D O I：
10.1016/j.solmat.2017.11.002
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：
Our research group fabricated low temperature based inverted semi-transparent CH3NH3PbI3 perovskite photovoltaics. The work function of PEDOT:PSS (PH1000) electrode was modified using polyethylenimine (PEI) and both layers are transferred on the ITO/PEDOT:PSS/CH3NH3PbI3/PCBM layer using hydrophobic polyurethane acrylate (PUA) polymer stamp. Even if the PH1000 spin coating on the CH3NH3PbI3/PCBM layer shows degradation of perovskite due to the inter-diffusion of PH1000 solvent, drying transfer shows effective layer stacking without degradation. The PEI treatment on the PH1000 contributes to reduce the work function from 5.1eV to 3.97 eV and this modification makes to improve the device performance from 0.07% to 4.02%. The full device average visible transmittance (AVT) exhibits 24.53% and the work function modification shows the decreased charge transporting resistance (R-c), which directly correlate to the enhanced open circuit voltage (V-oc) short circuit current (J(sc)) and fill factor (FF).
引用
收藏
页码：435 / 440
页数：6
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