Zhang Ting, Li Shibin
School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, 610054, Sichuan, China.
Nanoscale Res Lett. 2021 Jan 6;16(1):6. doi: 10.1186/s11671-020-03460-4.
In this manuscript, the inorganic perovskite CsPbIBr and CsPbIBr are investigated as photoactive materials that offer higher stability than the organometal trihalide perovskite materials. The fabrication methods allow anti-solvent processing the CsPbIBr 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 CsPbIBr perovskites in visible photodetection and provide an effective way to achieve high performance devices with self-powered capability.
在本论文中，无机钙钛矿CsPbIBr和CsPbIBr被作为光活性材料进行研究，它们比有机金属三卤化物钙钛矿材料具有更高的稳定性。制备方法允许对CsPbIBr薄膜进行反溶剂处理，克服了单步溶液法中经常出现的薄膜质量差的问题。旋涂过程中引入的乙醚被证明是成功的，并研究了反溶剂对薄膜质量的影响。使用这些方法制造的器件实现了高性能、自供电，且稳定的光电探测器显示出快速的响应速度。结果表明全无机CsPbIBr钙钛矿在可见光探测方面具有巨大潜力，并提供了一种实现具有自供电能力的高性能器件的有效方法。
