卤化物
钙钛矿(结构)
材料科学
复合数
电极
电阻式触摸屏
图层(电子)
光电子学
活动层
纳米技术
化学工程
无机化学
薄膜晶体管
复合材料
化学
电气工程
物理化学
工程类
作者
Jianghua Xu,Jianping Xu,Jing Chen,Kuifeng Zhu,Yanjie Su,Shaobo Shi,Lina Kong,Xiaosong Zhang,Lan Li
标识
DOI:10.1021/acs.jpcc.3c05703
摘要
Emerging as the ideal active layer materials for nonvolatile resistive memories are all-inorganic halide perovskites with high carrier mobility and fast ion migration characteristics. Herein, we introduce a polymethyl methacrylate (PMMA) film between the Al electrode and Cs3Bi2Br9 halide perovskite film to increase the initial resistance value of the device. In addition, it avoids the direct contact between the active electrode and Cs3Bi2Br9 perovskite as well as the introduction of excessive bromine vacancies (VBr) defects, suppresses the generation of metal halides and large-size VBr conductive filaments, enhances the cycling stability of the device, and prolongs the retention time. Among them, polymeric perovskite composite devices with moderate concentrations have a long retention time of 104 s, stable durability, and a small transition voltage of 0.9 V/–0.31 V. Furthermore, the device can also be utilized in three-person voting systems and logic circuits like “AND” and “OR” gates.
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