Journal
NANOSCALE RESEARCH LETTERS
Volume 16, Issue 1, Pages -Publisher
SPRINGER
DOI: 10.1186/s11671-020-03460-4
Keywords
CsPbI2Br; CsPbIBr2; Anti-solvent processing; Self-powered capability
Funding
- National Natural Science Foundation of China [61874150]
- Sichuan Key Project for Applied Fundamental Research [20YYJC4341]
- Key Laboratory Foundation of Chinese Academy of Sciences [2019LBC]
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In this study, inorganic perovskites CsPbI2Br and CsPbIBr2 were investigated as photoactive materials, with anti-solvent processing allowing for improved film quality. Devices fabricated using these methods showed high performance and stability, demonstrating self-powered capabilities. This research highlights the potential of all-inorganic CsPbIxBr3-x perovskites in visible photodetection.
In this manuscript, the inorganic perovskite CsPbI2Br and CsPbIBr2 are investigated as photoactive materials that offer higher stability than the organometal trihalide perovskite materials. The fabrication methods allow anti-solvent processing the CsPbIxBr3-x films, overcoming the poor film quality that always occur in a single-step solution process. The introduced diethyl ether in spin-coating process is demonstrated to be successful, and the effects of the anti-solvent on film quality are studied. The devices fabricated using the methods achieve high-performance, self-powered and the stabilized photodetectors show fast response speed. The results illustrate a great potential of all-inorganic CsPbIxBr3-x perovskites in visible photodetection and provide an effective way to achieve high performance devices with self-powered capability.
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