Stability enhancement of lead-free CsSnI3 perovskite photodetector with reductive ascorbic acid additive
作者机构：School of Physical Science and TechnologyCenter for Energy Conversion Materials&Physics(CECMP)Jiangsu Key Laboratory of Thin FilmsSoochow UniversitySuzhouChina
出 版 物：《InfoMat》 (信息材料（英文）)
年 卷 期：2020年第2卷第3期
页 面：577-584页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 070303[理学-有机化学] 0703[理学-化学]
基 金：Key University Science Research Project of Jiangsu Province,Grant/Award Number:17KJA430013 National Natural Science Foundation of China,Grant/Award Numbers:51372159,51422206,51772197,51872191 We acknowledge the support from the National Natural Science Foundation of China(51772197,51422206,51372159,51872191) 333 High-level Talents Cultivation Project of Jiangsu Province,1000 Youth Talents Plan,Key University Science Research Project of Jiangsu Province(17KJA430013) Six Talents Peak Project of Jiangsu Province,and Funded by the Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions
主 题：CsSnI3 lead-free perovskite photodetector self-powered
摘 要：Lead-free tin-based perovskites have attracted widespread research interestdue to their nontoxicity and potential commercialization. However, their practicalapplication is limited by high density of intrinsic defects and easy oxidationof Sn2+ in ambient environment. To address these issues, we demonstratean environment-friendly stable broadband photodetector based on CsSnI3perovskite with conventional SnF2 and reducing agent ascorbic acid *** optimizing the concentration of ascorbic acid, the optimal devicereveals high responsivity (0.257 A W−1), fast response speed (0.35/1.6 ms), andexcellent stability. The properties are comparable to most previously reportedlead-free perovskite photodetectors. The enhanced performance is mainlydue to the fact that ascorbic acid promotes the crystal growth, suppresses theformation of Sn4+, and makes it have good semiconductivity rather thanmetallicity.
维普期刊数据库