奥斯特瓦尔德成熟
激子
材料科学
纳米晶
钙钛矿(结构)
铟
星团(航天器)
激发态
化学物理
纳米技术
光电子学
卤化物
化学
结晶学
无机化学
原子物理学
凝聚态物理
物理
计算机科学
程序设计语言
作者
Fei Zhang,Dongwen Yang,Zhifeng Shi,Chaochao Qin,Minghuan Cui,Zhuangzhuang Ma,Lintao Wang,Meng Wang,Xinzhen Ji,Xu Chen,Di Wu,Xinjian Li,Lijun Zhang,Chongxin Shan
出处
期刊:Nano Today
[Elsevier]
日期:2021-06-01
卷期号:38: 101153-101153
被引量:33
标识
DOI:10.1016/j.nantod.2021.101153
摘要
The growing demand for lighting and displays has motivated intensive research in metal-halide perovskite nanocrystals (NCs) recently. However, the development of blue-emissive perovskite NCs lag behind those of green and red ones severely; moreover, the conventional lead-halide perovskites contain toxic element lead. In this study, zero-dimensional Cs3InBr6 NCs with intrinsic broadband blue emission (~ 450 nm) were developed for the first time. Joint experiment-theory characterizations reveal the excited-state structural distortion of [InBr6]3− cluster enables the formation of self-trapped excitons, which contribute the broadband emission. Apart from the solid structure, hollow NCs with controlled particle and pore sizes were obtained resulting from the Ostwald ripening mechanisms. Theoretical calculations show that the easy diffusion of Br vacancies in Cs3InBr6 lattices assist the formation of hollow structure. Encouraged by the remarkable structural and optical stability of hollow Cs3InBr6 NCs, such lead-free NCs may open up new avenues for manufacture of optoelectronic devices.
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