期刊
ADVANCED FUNCTIONAL MATERIALS
卷 28, 期 10, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201705220
关键词
crystalline qualities; hydrolytic insulating oxide; perovskites; photodetectors
类别
资金
- National Natural Science Foundation of China [91733301, 51627803, 11474333, 51421002, 51402348, 51372270, 91433205]
- Knowledge Innovation Program of the Chinese Academy of Sciences
A high quality perovskite film is a key factor in determining the device performance, such as photovoltaic cells, light-emission diodes, lasers, and photodetectors. Here, a method is presented to improve the crystalline quality of perovskite films on surface-oxygen-rich insulating oxide substrates, which can promote the growth of both the polycrystalline and single crystals and enhance the adhesion between the perovskites and the substrates. A much longer carrier diffusion length of exceeding 5 mu m together with significantly reduced trap density and nonradiative recombination is achieved for the film. These perovskite films show much better lasing and photodetector performance, indicating promising applications for the light emitting, lasing, and detector devices.
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