Colloidal Synthesis and Optical Properties of Cs2CuCl4 Nanocrystals

被引：6

作者：

Gu, Wanying ^{[1
]}

Zeng, Yicheng ^{[1
]}

Deng, Yuan ^{[1
]}

Huang, Pan ^{[1
]}

Jin, Geyu ^{[1
]}

Liu, Fangze ^{[2
]}

Wei, Jing ^{[1
]}

Li, Hongbo ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

[2] Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China

来源：

CRYSTALS | 2023年 / 13卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Cs2CuCl4; nanocrystals; Ag passivation; photoluminescence quantum yield; stability; HALIDE PEROVSKITE NANOCRYSTALS; ROOM-TEMPERATURE SYNTHESIS; ANION-EXCHANGE; QUANTUM DOTS; SUBSTITUTION; PASSIVATION; CSPBX3; BR; CL;

D O I：

10.3390/cryst13060864

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Lead-free copper halide perovskite nanocrystals (NCs) are emerging materials with excellent photoelectric properties. Herein, we present a colloidal synthesis route for orthorhombic Cs2CuCl4 NCs with a well-defined cubic shape and an average diameter of 24 & PLUSMN; 2.1 nm. The Cs2CuCl4 NCs exhibited bright, deep blue photoluminescence, which was attributed to the Cu(II) defects. In addition, passivating the Cs2CuCl4 NCs by Ag+ could effectively improve the photoluminescence quantum yield (PLQY) and environmental stability.

引用

页数：11

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