Stable Inverted Planar Perovskite Solar Cells with Low‐Temperature‐Processed Hole‐Transport Bilayer |
| |
| Authors: | Zhongmin Zhou Xing Li Molang Cai Fengxian Xie Yongzhen Wu Zhang Lan Xudong Yang Yinghuai Qiang Ashraful Islam Liyuan Han |
| |
| Institution: | 1. Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan;2. State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, China;3. School of Material Science and Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, China |
| |
| Abstract: | Low‐temperature‐processed perovskite solar cells (PSCs), which can be fabricated on rigid or flexible substrates, are attracting increasing attention because they have a wide range of potential applications. In this study, the stability of reduced graphene oxide and the ability of a poly(triarylamine) underlayer to improve the quality of overlying perovskite films to construct hole‐transport bilayer by means of a low‐temperature method are taken advantage of. The bilayer is used in both flexible and rigid inverted planar PSCs with the following configuration: substrate/indium tin oxide/reduced graphene oxide/polytriarylamine/CH3NH3PbI3/PCBM/bathocuproine/Ag (PCBM = 6,6]‐phenyl‐C61‐butyric acid methyl ester). The flexible and rigid PSCs show power conversion efficiencies of 15.7 and 17.2%, respectively, for the aperture area of 1.02 cm2. Moreover, the PSC based the bilayer shows outstanding light‐soaking stability, retaining ≈90% of its original efficiency after continuous illumination for 500 h at 100 mW cm?2. |
| |
| Keywords: | high efficiency hole‐transport bilayer inverted planar perovskite solar cells long‐term stability low temperature |
|
|
