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

Colloidal Synthesis and Optical Properties of Cs₂CuCl₄ Nanocrystals

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

^*Corresponding author for this work

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

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.

Original language	English
Article number	864
Journal	Crystals
Volume	13
Issue number	6
DOIs	https://doi.org/10.3390/cryst13060864
Publication status	Published - Jun 2023

Keywords

Ag passivation
CsCuCl nanocrystals
photoluminescence quantum yield
stability

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10.3390/cryst13060864

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Gu, W., Zeng, Y., Deng, Y., Huang, P., Jin, G., Liu, F., Wei, J., & Li, H. (2023). Colloidal Synthesis and Optical Properties of Cs₂CuCl₄ Nanocrystals. Crystals, 13(6), Article 864. https://doi.org/10.3390/cryst13060864

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abstract = "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.",

keywords = "Ag passivation, CsCuCl nanocrystals, photoluminescence quantum yield, stability",

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

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volume = "13",

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T1 - Colloidal Synthesis and Optical Properties of Cs2CuCl4 Nanocrystals

AU - Gu, Wanying

AU - Zeng, Yicheng

AU - Deng, Yuan

AU - Huang, Pan

AU - Jin, Geyu

AU - Liu, Fangze

AU - Wei, Jing

AU - Li, Hongbo

PY - 2023/6

Y1 - 2023/6

N2 - 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.

AB - 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.

KW - Ag passivation

KW - CsCuCl nanocrystals

KW - photoluminescence quantum yield

KW - stability

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U2 - 10.3390/cryst13060864

DO - 10.3390/cryst13060864

M3 - Article

AN - SCOPUS:85163891575

SN - 2073-4352

VL - 13

JO - Crystals

JF - Crystals

IS - 6

M1 - 864

ER -

Colloidal Synthesis and Optical Properties of Cs₂CuCl₄ Nanocrystals

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