Colloidal Synthesis and Optical Properties of Cs2CuCl4 Nanocrystals

Wanying Gu; Yicheng Zeng; Yuan Deng; Pan Huang; Geyu Jin; Fangze Liu; Jing Wei; Hongbo Li

doi:10.3390/cryst13060864

Crystals (May 2023)

Colloidal Synthesis and Optical Properties of Cs2CuCl4 Nanocrystals

Wanying Gu,
Yicheng Zeng,
Yuan Deng,
Pan Huang,
Geyu Jin,
Fangze Liu,
Jing Wei,
Hongbo Li

Affiliations

Wanying Gu: School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Yicheng Zeng: School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Yuan Deng: School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Pan Huang: School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Geyu Jin: School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Fangze Liu: Advanced Research Institute of Multidisciplinary Sciences, Beijing Institute of Technology, Beijing 100081, China
Jing Wei: School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Hongbo Li: School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China

DOI: https://doi.org/10.3390/cryst13060864
Journal volume & issue: Vol. 13, no. 6
p. 864

Abstract

Read online

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 ± 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.

Published in Crystals

ISSN: 2073-4352 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Crystallography
Website: http://www.mdpi.com/journal/crystals/

About the journal

Abstract

Keywords