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Excitation wavelength-dependent long-afterglow Sb, Mn-doped CsCdCl3 perovskite for anti-counterfeiting applications.
- Source :
-
Ceramics International . Feb2024, Vol. 50 Issue 4, p6374-6380. 7p. - Publication Year :
- 2024
-
Abstract
- Multi-color fluorescent anti-counterfeiting technology possesses a wide range of application prospects. However, there is still a challenge on the development of new single-component multi-color fluorescent materials related to the excitation wavelength. Herein, we report an efficient multi-peak luminescent material, Sb3+, Mn2+ co-doped CsCdCl 3 , which emission with a long afterglow is related to the excitation wavelength. There are two independent energy transfer channels of Mn2+ under short- and long-wave excitation. Under 357 nm excitation, dual-emission is observed at 506 and 590 nm attributed to the 3P 1 –1S 0 and 4T 1 -6A 1 transitions of [SbCl 6 ]3- and Mn2+ ions, respectively. Under 254 nm excitation, the microcrystals have orange emission. Excitation wavelength-dependent and tunable dual-emission associated with the host self-captured excitons and [SbCl 6 ]3- to Mn2+ energy transfer. The microcrystal's afterglow time at room temperature is 3500 s, which is attributed to the modulation of the trap for Mn2+. These results indicate that the material has potential applications in the field of multicolor fluorescent anti-counterfeiting. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ENERGY transfer
*PEROVSKITE
*DOPING agents (Chemistry)
*EXCITON theory
*WAVELENGTHS
Subjects
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 50
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 174580480
- Full Text :
- https://doi.org/10.1016/j.ceramint.2023.11.372