Fluorescence-enhanced Cs2Ag0.3-xNaxZn0.35In1-yCl6:yM double perovskites for multimodal optical anti-counterfeiting

被引：1

作者：

Long, Gang ^{[1
]}

Teng, Xiyue ^{[1
]}

Qiao, Xiangkai ^{[1
]}

Meng, Ziwei ^{[1
]}

Zheng, Yalin ^{[1
]}

Abdukayum, Abdukader ^{[1
]}

机构：

[1] Kashi Univ, Coll Chem & Environm Sci, Xinjiang Key Lab Novel Funct Mat Chem, Kashgar 844000, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2024年 / 335卷

基金：

中国国家自然科学基金;

关键词：

Lead-free halide double perovskite; Fluorescence quantum yield; Ratiometric emission; Multi -mode anti-counterfeiting; Information coding; TRANSITIONS; DESIGN;

D O I：

10.1016/j.jssc.2024.124725

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The excellent optical properties of lead-free halide double perovskites (LHDPs) Cs2AgInCl6 are of great importance in the field of anti-counterfeiting encryption. However, the fluorescence quantum yield of the existing Cs2AgInCl6-based materials is relatively low, and the fluorescence color is monochromatic, making it difficult to use in advanced multi-mode anti-counterfeiting applications. In this study, we synthesized Cs2Ag0.3-xNaxZn0.35In1-yCl6:yM (M = Cr/Bi) series LHDPs using an anti-solvent assisted co-precipitation method, improving the optical properties of Cs2AgInCl6-based materials by optimizing their composition. The fluorescence quantum yield of Zn-Na substituted Cr-doped Cs2Ag0.3-xNaxZn0.35In1-yCl6 LHDPs increased from 1.53 % to 82.57 % on the basis of Cs2AgInCl6. The Zn-Na substituted Bi-doped Cs2Ag0.3-xNaxZn0.35In1-yCl6 LHDPs exhibited dualwavelength fluorescence emission at 407 and 650 nm, and the relative intensity between the two emission wavelengths changed via a change in the Bi doping amount, resulting in a change in the material's luminescence color. The as-synthesized LHDPs could be applied to multi-mode anti-counterfeiting, optical coding information storage, and art decoration applications.

引用

页数：8

共 46 条

[21] Cs2AgInCl6 Double Perovskite Single Crystals: Parity Forbidden Transitions and Their Application For Sensitive and Fast UV Photodetectors [J].