Fluorescent, multifunctional anti-counterfeiting, fast response electrophoretic display based on TiO<sub>2</sub>/CsPbBr<sub>3</sub> composite particles

Guangyou Liu; Xinzao Wu; Feng Xiong; Jinglan Yang; Yunhe Liu; Jie Liu; Zhuohang Li; Zong Qin; Shaozhi Deng; Bo-Ru Yang

doi:10.1038/s41377-024-01526-x

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Fluorescent, multifunctional anti-counterfeiting, fast response electrophoretic display based on TiO₂/CsPbBr₃ composite particles

Original Articles

- Fluorescent, multifunctional anti-counterfeiting, fast response electrophoretic display based on TiO₂/CsPbBr₃ composite particles
- Light: Science & Applications Vol. 13, Issue 10, Pages: 2168-2178(2024)
- Affiliations：
  
  State Key Laboratory of Opto-electronic Materials and Technology, Guangdong Province Key Laboratory of Display Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510006, China
- Author bio：
  
  Bo-Ru Yang (yangboru@mail.sysu.edu.cn)
- Funds：
- DOI：10.1038/s41377-024-01526-x
  CLC：
- Received：15 March 2024，
  
  Revised：25 June 2024，
  
  Accepted：2024-07-11，
  
  Published Online：20 August 2024，
  
  Published：31 October 2024
- Accepted：
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Liu, G. Y. et al. Fluorescent, multifunctional anti-counterfeiting, fast response electrophoretic display based on TiO₂/CsPbBr₃ composite particles. Light: Science & Applications, 13, 2168-2178 (2024).
DOI：

Liu, G. Y. et al. Fluorescent, multifunctional anti-counterfeiting, fast response electrophoretic display based on TiO₂/CsPbBr₃ composite particles. Light: Science & Applications, 13, 2168-2178 (2024). DOI： 10.1038/s41377-024-01526-x.

摘要

Abstract

Traditional optical anti-counterfeiting (AC) is achieved by static printed images

which makes them susceptible to lower levels of security and easier replication. Therefore

it is essential to develop AC device with dynamic modulation for higher security. Electrophoretic display (EPD) has the advantages of low power consumption

high ambient contrast ratio

and capability of showing dynamic images which is suitable for dynamic AC applications. Herein

we prepared a dynamical AC device based on a fluorescent EPD

and achieving the image switch between black

white

and green fluorescence states under the dual-mode driving (electronic field and UV light). We loaded perovskite quantum dots (CsPbBr

) onto the TiO

particles and further prepared fluorescent electrophoretic particles TiO

/CsPbBr

-3-PLMA (TiO/CPB-3) by grafting and polymerizing method

. In addition

we fabricated the AC devices based on the fluorescent EPD

which exhibits the multifunctional AC

where the fluorescent EPD has a fast response time of 350 ms

a high contrast ratio of 17

and bright green fluorescence. This prototype demonstrates a new way for future dynamic AC and identification.

关键词

Keywords

references

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Fluorescent, multifunctional anti-counterfeiting, fast response electrophoretic display based on TiO2/CsPbBr3 composite particles

DOI：10.1038/s41377-024-01526-x

摘要

Abstract

关键词

Keywords

references

Fluorescent, multifunctional anti-counterfeiting, fast response electrophoretic display based on TiO₂/CsPbBr₃ composite particles