Pressure-Driven Abnormal Emission Blue-Shift of Lead-Free Halide Double Perovskite Cs2AgInCl6 Nanocrystals

被引：13
|
作者：
Chen, Ao [1 ,2 ]
Jing, Xiaoling [1 ]
Wang, Tianyuan [3 ]
Zhao, Tingting [1 ]
Zhang, Yu [1 ]
Zhou, Donglei [1 ,3 ]
Sun, Rui [3 ]
Zhang, Xueting [1 ]
Liu, Ran [1 ]
Liu, Bo [1 ]
Li, Quanjun [1 ]
Liu, Bingbing [1 ]
机构：
[1] Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China
[3] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China
来源：
INORGANIC CHEMISTRY | 2022年 / 61卷 / 17期
基金：
中国国家自然科学基金;
关键词：
This work was financially supported by the National Key Research and Development Program of China (2018YFA0305900); the National Natural Science Foundation of China (11874172; U2032215; and; 11634004); and the JLU Science and Technology Innovative Research Team (2017TD-01);
D O I：
10.1021/acs.inorgchem.2c00185
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Lead-free halide double perovskites (DPs) have been proposed as stable and promising alternatives to lead halide perovskites.Understanding the structural-optical properties of halide DPs isimportant for their applications. In this study, Cs2AgInCl6DPnanocrystals, with a direct band gap, were synthesized and studied.Because of a strong electron-phonon coupling leading to exciton self-trapping, a broad emission with a large Stokes shift of Cs2AgInCl6DPnanocrystals is observed. We observed an abnormal blue-shifted emissionaccompanied by a red-shifted direct absorption edge because of thereduced electron-phonon coupling under compression in the cubic phaseCs2AgInCl6DP nanocrystals. Our study clarified the basic structural-optical correlation of halide DPs and may promote their application in related fields
引用
收藏
页码：6488 / 6492
页数：5
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