writer：Yifei Yue, Shengnan Liu, Ning Zhang, Zhongmin Su, Dongxia Zhu
keywords：All-inorganic perovskites, Surface modification, s-Triazine Substituents, Photoelectric performance
source：期刊
specific source：Chinese Chemical Letters
Issue time：2022年
We develop the effective modification strategy based on molecular engineering of s-triazine and its derivatives to improve the photoelectric performance of all-inorganic perovskites (AIP) for the first time. The surface modification strategy with cyanuric acid successfully increases the PLQY of AIP from 40.55% to 88.15%, and significantly enhances the current of the AIP film under 3 V by almost 20-fold (from 4.44 mA to 81.20 mA). This work has proven the effectiveness of improving the photoelectric performances of AIP via s-triazine and its derivatives and also suggested the potential risks of reducing the photoelectric performance of AIP due to inappropriate substituents in conjugated organic ligands.