Doped all-inorganic cesium zirconium halide perovskites with high-efficiency and tunable emission

被引：51

作者：

Cheng, Pengfei ^{[1
]}

Zheng, Daoyuan ^{[2
]}

Feng, Lu ^{[3
]}

Liu, Yuefeng ^{[3
]}

Liu, Junxue ^{[1
]}

Li, Juntao ^{[4
,5
]}

Yang, Yang ^{[1
]}

Wang, Guoxiong ^{[3
]}

Han, Keli ^{[1
,2
,5
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China

[2] Shandong Univ, Inst Mol Sci & Engn, Qingdao 266000, Shandong, Peoples R China

[3] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy DNL, Dalian 116023, Liaoning, Peoples R China

[4] Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Chem Lasers, Dalian 116023, Liaoning, Peoples R China

[5] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

JOURNAL OF ENERGY CHEMISTRY | 2022年 / 65卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Zirconium halide perovskite; Doping; Excitation energy; Photoluminescence; Energy transfer; LIGHT-EMITTING-DIODES; SELF-TRAPPED EXCITONS; LUMINESCENT; RB; BR;

D O I：

10.1016/j.jechem.2021.06.033

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Doping enables manipulation of both the electrical and optical properties of halide perovskites. Herein, we incorporated Te4+ into Cs2ZrCl6 single crystal, simultaneously preserving the vacancy-ordered structure, to obtain an efficient yellow-emitting perovskite with a near-unity photoluminescence quantum yield (PLQY approximate to 97.6%). Te4+ doping modifies the hue and emission color of pristine Cs2ZrCl6, generates new absorption channels, and successfully extends the excitation energy from < 280 nm to 360-450 nm range. Detailed spectral characterizations, including ultrafast femtosecond transient absorption measurements, reveal that the bright yellow light is derived from triplet self-trapped excitons. Moreover, further tuning doping concentration enables Te-doped Cs2ZrCl6 single crystals to exhibit efficient warm white light emission. This work provides a new perspective for the development and design of stable lead-free perovskites with highly efficient luminescence. (C) 2021 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.

引用

页码：600 / 604

页数：5

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