钙钛矿(结构)
水溶液
荧光
催化作用
材料科学
带隙
离子键合
八面体
无机化学
纳米技术
纳米尺度
溴化物
化学工程
化学
离子
光电子学
有机化学
光学
工程类
物理
作者
Atanu Jana,Kwang S. Kim
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2018-08-13
卷期号:3 (9): 2120-2126
被引量:64
标识
DOI:10.1021/acsenergylett.8b01394
摘要
Stabilization of perovskites without addition of foreign surface-passivating ligands in aqueous media is essential for their applications in optoelectronics, biomedical science, and catalysis. However, these materials instantly degrade in water due to its intrinsic ionic nature. By controlling the peripheral layer of octahedral perovskite geometry, we reproducibly synthesized a series of rod-shaped fluorescent hybrid perovskites in both acidic and basic media at ambient conditions in large scale without capping ligands. The band gap is tunable from the red to sky-blue region with sharp emission. The lead bromide perovskites are stable more than 6 months in water without structural change. Our simple synthetic route has resolved the longstanding problems for its practical application in aqueous environment.
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