Tunable Dual-Emission in Monodispersed Sb3+/Mn2+Codoped Cs2NaInCl6Perovskite Nanocrystals through an Energy Transfer Process

被引：144

作者：

Liu, Xingyi ^{[1
]}

Xu, Xi ^{[1
]}

Li, Ben ^{[1
]}

Yang, Lanlan ^{[1
]}

Li, Qi ^{[1
]}

Jiang, Hong ^{[1
]}

Xu, Dongsheng ^{[1
]}

机构：

[1] Peking Univ, Coll Chem & Mol Engn, State Key Lab Struct Chem Unstable & Stable Speci, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China

来源：

SMALL | 2020年 / 16卷 / 31期

基金：

中国国家自然科学基金;

关键词：

dual-emission; energy transfer; lead-free perovskites; nanocrystals; LIGHT-EMITTING DIODES; WHITE-LIGHT; PEROVSKITE; DYNAMICS;

D O I：

10.1002/smll.202002547

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Double halide perovskites are a class of promising semiconductors applied in photocatalysis, photovoltaic devices, and emitters to replace lead halide perovskites, owing to their nontoxicity and chemical stability. However, most double perovskites always exhibit low photoluminescence quantum efficiency (PLQE) due to the indirect bandgap structure or parity-forbidden transition problem, limiting their further applications. Herein, the self-trapped excitons emission of Cs(2)NaInCl(6)by Sb-doping, showing a blue emission with high PLQE of 84%, is improved. Further, Sb/Mn codoped Cs(2)NaInCl(6)nanocrystals are successfully synthesized by the hot-injection method, showing a tunable dual-emission covering the white-light spectrum. The studies of PL properties and dynamics reveal that an energy transfer process can occur between the self-trapped excitons and dopants (Mn2+). The work provides a new perspective to design novel lead-free double perovskites for realizing a unique white-light emission.

引用

页数：7

共 40 条

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