Excitation-wavelength-dependent persistent luminescence from single-component nonstoichiometric CaGa<sub>x</sub>O<sub>4</sub>:Bi for dynamic anti-counterfeiting

Bo-Mei Liu; Yue Lin; Yingchun Liu; Bibo Lou; Chong-Geng Ma; Hui Zhang; Jing Wang

doi:10.1038/s41377-024-01635-7

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Excitation-wavelength-dependent persistent luminescence from single-component nonstoichiometric CaGa_xO₄:Bi for dynamic anti-counterfeiting

Original Articles

- Excitation-wavelength-dependent persistent luminescence from single-component nonstoichiometric CaGa_xO₄:Bi for dynamic anti-counterfeiting
- Excitation-wavelength-dependent persistent luminescence from single-component nonstoichiometric CaGa_xO₄:Bi for dynamic anti-counterfeiting
- LSA 2024年13卷第12期页码：3064-3075
- Affiliations：
  
  1.School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, China
  2.Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, Sun Yat-sen University, Guangzhou, China
  3.Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Jieyang, China
  4.School of Optoelectronic Engineering & CQUPT-BUL Innovation Institute, Chongqing University of Posts and Telecommunications, Chongqing, China
  5.Nanchang Research Institute, Sun Yat-sen University, Nanchang, Jiangxi, China
- Author bio：
  
  Bo-Mei Liu (liubomei@gdut.edu.cn)
  Chong-Geng Ma (cgma.ustc@gmail.com)
  Jing Wang (ceswj@mail.sysu.edu.cn)
- Funds：
- DOI：10.1038/s41377-024-01635-7
  中图分类号：
- 收稿日期：2024-05-30，
  
  修回日期：2024-08-27，
  
  录用日期：2024-09-11，
  
  网络出版日期：2024-10-10，
  
  纸质出版日期：2024-12-31
- Accepted：
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Excitation-wavelength-dependent persistent luminescence from single-component nonstoichiometric CaGa_xO₄:Bi for dynamic anti-counterfeiting[J]. LSA, 2024,13(12):3064-3075.

Liu, B. M. et al. Excitation-wavelength-dependent persistent luminescence from single-component nonstoichiometric CaGa_xO₄:Bi for dynamic anti-counterfeiting. Light: Science & Applications, 13, 3064-3075 (2024).
Excitation-wavelength-dependent persistent luminescence from single-component nonstoichiometric CaGa_xO₄:Bi for dynamic anti-counterfeiting[J]. LSA, 2024,13(12):3064-3075. DOI： 10.1038/s41377-024-01635-7.

Liu, B. M. et al. Excitation-wavelength-dependent persistent luminescence from single-component nonstoichiometric CaGa_xO₄:Bi for dynamic anti-counterfeiting. Light: Science & Applications, 13, 3064-3075 (2024). DOI： 10.1038/s41377-024-01635-7.

摘要

Abstract

Materials capable of dynamic persistent luminescence (PersL) within the visible sp

ectrum are highly sought after for applications in display

biosensing

and information security. However

PersL materials with eye-detectable and excitation-wavelength-dependent characteristics are rarely achieved. Herein

a nonstoichiometric compound CaGa

:Bi (

2) is present

which demonstrates ultra-long

color-tunable PersL. The persistent emission wavelength can be tuned by varying the excitation wavelength

enabling dynamic color modulation from the green to the orange region within the visible spectrum. Theoretical calculations

in conjunction with experimental observations

are utilized to elucidate the thermodynamic charge transitions of various defect states

thereby providing insights into the relationship between Bi

emitters

traps

and multicolored PersL. Furthermore

the utility of color-tunable PersL materials and flexible devices is showcased for use in visual sensing of invisible ultraviolet light

multicolor display

information encryption

and anti-counterfeiting. These discoveries create new opportunities to develop smart photoelectric materials with dynamically controlled PersL for various applications.

关键词

Keywords

references

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Excitation-wavelength-dependent persistent luminescence from single-component nonstoichiometric CaGaxO4:Bi for dynamic anti-counterfeiting

Excitation-wavelength-dependent persistent luminescence from single-component nonstoichiometric CaGaxO4:Bi for dynamic anti-counterfeiting

DOI：10.1038/s41377-024-01635-7

摘要

Abstract

关键词

Keywords

references

Excitation-wavelength-dependent persistent luminescence from single-component nonstoichiometric CaGa_xO₄:Bi for dynamic anti-counterfeiting

Excitation-wavelength-dependent persistent luminescence from single-component nonstoichiometric CaGa_xO₄:Bi for dynamic anti-counterfeiting