钙钛矿(结构)
磁滞
光伏
材料科学
开尔文探针力显微镜
混合太阳能电池
纳米技术
卤化物
太阳能电池
光电子学
光伏系统
原子力显微镜
化学
凝聚态物理
无机化学
聚合物太阳能电池
结晶学
物理
生物
生态学
作者
Wenlong Yao,Shuyan Fang,Yanyan Wang,Ziyang Hu,Like Huang,Xiaohui Liu,Tao Jiang,Jing Zhang,Jun Wang,Yuejin Zhu
摘要
All-inorganic halide perovskites (AIHPs) have become one of the most promising materials for commercial perovskite photovoltaics owing to their enhanced efficiency and thermodynamic stability. Output instability, such as current hysteresis, is stressed in organic-inorganic hybrid perovskite photovoltaics but is neglected in AIHP solar cells. Here, the origin and suppression of current hysteresis in AIHP solar cells are addressed from a microscopic viewpoint. The incorporation of fullerene into AIHP films efficiently suppresses ion migration, which alleviates the macroscopic current hysteresis in solar cells. This result is confirmed by both Kelvin probe force microscopy and conductive atomic force microscopy measurements. Our results provide an advanced understanding of the microscopic properties of AIHPs but also clearly clarify how to suppress the macroscopic current hysteresis, which further inspires the optimization of solar cells up to the levels of organic–inorganic hybrid counterparts.
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