卤化物
锌
钙钛矿(结构)
锰
降水
材料科学
发光二极管
无机化学
量子产额
相(物质)
光电子学
化学
冶金
光学
结晶学
物理
有机化学
气象学
荧光
作者
Pierre Martin,A. Potdevin,G. Chadeyron,François Réverêt,Damien Boyer
标识
DOI:10.1021/acsaom.3c00377
摘要
Along with its instability, a major drawback of the well-known CsPbX3 perovskite is lead toxicity, which motivates the development of new halides that are interesting for their optical properties. In this paper, a new antisolvent precipitation method is proposed to achieve Cs3MnBr5 with a relatively narrow 520 nm green emission under UV and blue excitations. Results show that phase stability in air is improved through zinc alloying, which leads to a decrease in its hydration propensity. Zinc alloying results in larger particles and a significant enhancement of the internal quantum yield, from 20% for Cs3MnBr5 to 65% for Cs3Zn0.6Mn0.4Br5 under blue excitation. In brief, this work opens a new perspective to easily produce lead-free perovskite-inspired manganese halides, whose optical properties are suitable for association with commercial blue or UV LEDs.
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