| 题目： | Full-Dimensional Grain Boundary Stress Release for Flexible Perovskite Indoor Photovoltaics |
作者： | Chun-Hao Chen,#,1 Zhen-Huang Su,#,2 Yan-Hui Lou,3 Yan-Jun Yu,1 Kai-Li Wang,1 Gen-Lin Liu,1 Yi-Ran Shi,1 Jing Chen,1 Jun-Jie Cao,1 Liang Zhang,1 Xing-Yu Gao,2 and Zhao-Kui Wang1,* |
单位： | 1 Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China. 2 Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China. 3 College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China. |
摘要： | Perovskite photovoltaics are strong potential candidates to drive low-power off-grid electronics for indoor applications. Compared with rigid devices, flexible perovskite devices can provide a more suitable surface for indoor small electronic devices, enabling them have a broader indoor application prospect. However, the mechanical stability of flexible perovskite photovoltaics is an urgent issue solved. Herein, a kind of 3D crosslinking agent named borax is selected to carry out grain boundary penetration treatment on perovskite film to realize full-dimensional stress release. This strategy improves the mechanical and phase stabilities of perovskite films subjected to external forces or large temperature changes. The fabricated perovskite photovoltaics deliver a champion power conversion efficiency (PCE) of 21.63% under AM 1.5G illumination, which is the highest one to date. The merit of low trap states under weak light makes the devices present a superior indoor PCE of 31.85% under 1062 lux (LED, 2956 K), which is currently the best flexible perovskite indoor photovoltaic device. This work provides a full-dimensional grain boundary stress release strategy for highly stable flexible perovskite indoor photovoltaics. |
影响因子： | 30.849 |
分区情况： | 一区 |
链接： |
责任编辑：郭佳