光致发光
发光
材料科学
纳米晶
钙钛矿(结构)
降水
纳米材料
卤化物
纳米技术
铯
离子
离子交换
Crystal(编程语言)
化学工程
结晶学
无机化学
化学
光电子学
有机化学
物理
工程类
气象学
计算机科学
程序设计语言
作者
Kunhua Wang,Liang Wu,Lei Li,Hong‐Bin Yao,Haisheng Qian,Shu‐Hong Yu
标识
DOI:10.1002/ange.201602787
摘要
Abstract All‐inorganic cesium lead‐halide perovskite nanocrystals have emerged as attractive optoelectronic nanomaterials owing to their stabilities and highly efficient photoluminescence. Herein we report a new type of highly luminescent perovskite‐related CsPb 2 Br 5 nanoplatelets synthesized by a facile precipitation reaction. The layered crystal structure of CsPb 2 Br 5 promoted an anisotropic two‐dimensional (2D) crystal growth during the precipitation process, thus enabling the large‐scale synthesis of CsPb 2 Br 5 nanoplatelets. Fast anion exchange has also been demonstrated in as‐synthesized CsPb 2 Br 5 nanoplatelets to extend their photoluminescence spectra to the entire visible spectral region. The large‐scale synthesis and optical tunability of CsPb 2 Br 5 nanoplatelets will be advantageous in future applications of optoelectronic devices.
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