All-Inorganic Lead-Free 0D Perovskites by a Doping Strategy to Achieve a PLQY Boost from <2 % to 90 %

被引：212
作者：
Han, Peigeng [1 ,2 ]
Luo, Cheng [1 ,2 ]
Yang, Songqiu [1 ]
Yang, Yang [1 ]
Deng, Weiqiao [3 ]
Han, Keli [1 ,3 ]
机构：
[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Shandong Univ, Inst Mol Sci & Engn, Qingdao 266237, Peoples R China
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2020年 / 59卷 / 31期
基金：
中国国家自然科学基金;
关键词：
doping; enhanced photoluminescence; lead-free perovskites; stability; zero-dimensional perovskites; NANOCRYSTALS; LUMINESCENCE; EMISSION;
D O I：
10.1002/anie.202003234
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Zero-dimensional (0D) lead-free perovskites have unique structures and optoelectronic properties. Undoped and Sb-doped all inorganic, lead-free, 0D perovskite single crystals A(2)InCl(5)(H2O) (A=Rb, Cs) are presented that exhibit greatly enhanced yellow emission. To study the effect of coordination H2O, Sb-doped A(3)InCl(6) (A=Rb, Cs) are also synthesized and further studied. The photoluminescence (PL) color changes from yellow to green emission. Interestingly, the photoluminescence quantum yield (PLQY) realizes a great boost from <2 % to 85-95 % through doping Sb3+. We further explore the effect of Sb3+ dopants and the origin of bright emission by ultrafast transient absorption techniques. Furthermore, Sb-doped 0D rubidium indium chloride perovskites show excellent stability. These findings not only provide a way to design a set of new high-performance 0D lead-free perovskites, but also reveal the relationship between structure and PL properties.
引用
收藏
页码：12709 / 12713
页数：5
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