期刊
ADVANCED SCIENCE
卷 7, 期 14, 页码 -出版社
WILEY
DOI: 10.1002/advs.202000776
关键词
2D perovskites; hot-casting; perovskites; photodetectors; vertical heterojunctions
资金
- Research Grants Council (RGC) of Hong Kong, China [15210319]
2D Ruddlesden-Popper perovskites have attracted wide attention recently because of tunable optoelectronic properties and have been used as alternatives to their 3D counterparts in various optoelectronic devices. Here, a series of (PEA)(2)(MA)(n)-1PbnI3n+1 perovskite thin films is designed and fabricated by a convenient hot-casting method to obtain gradient n in the films, which leads to the formation of vertical heterojunctions that can enhance charge separation in the films under light illumination. Based on a single gradient perovskite film, a highly sensitive and stable photodetector with a responsivity up to 149 AW(-1) and a specific detectivity of 2 x 10(12) Jones is obtained. This work paves a way to realizing high-performance optoelectronic devices with enhanced charge separation by introducing compositional gradient in a perovskite film.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据