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Multimode Dynamic Photoluminescence of Bi
Zishuo Yi1, Peng Liu1, Yan Xu1,2
1Department of Chemistry, College of Sciences, Northeastern University, Shenyang, Liaoning 110819, P. R. China.
Inorganic Chemistry
|June 3, 2023
Summary
Researchers developed a novel Bi3+-activated ZnGa2O4 material for dynamic photoluminescence (PL) applications. This material enables rewritable optical data storage and advanced information encryption through photochromic and thermochromic properties.
Area of Science:
- Materials Science
- Optoelectronics
- Information Security
Background:
- Optical storage is crucial for information security.
- Dynamic photoluminescence (PL) materials offer potential for advanced encryption.
Purpose of the Study:
- To develop a Bi3+-activated ZnGa2O4 material with dynamic photoluminescence properties.
- To investigate its potential for rewritable optical data storage and information encryption.
Main Methods:
- Synthesis of Bi3+-doped ZnGa2O4 samples (ZnGa2O4: x% Bi3+).
- Characterization using ultraviolet (UV) irradiation and thermoluminescence spectra.
- Evaluation of photochromic and thermochromic dynamic PL responses.
Main Results:
- ZnGa2O4: Bi3+ exhibited dynamic PL emission dependent on Bi3+ concentration.
- A reversible blue-to-red color change was observed with temperature variation (283–393 K).
- The material demonstrated potential for rewritable optical data storage and encryption.
Conclusions:
- Bi3+-activated ZnGa2O4 is a promising dynamic PL material for information safeguarding.
- The material's photochromic and thermochromic properties enable advanced encryption schemes.
- This work presents a feasible route for designing dynamic PL materials for enhanced security.
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