Abstract
Abstract
The growing demand for optical anti-counterfeiting technology requires the development of new environmentally-friendly smart materials with single-component, multimodal fluorescence. Herein, Cs2ZnBr4:0.3Mn2+&0.15Cu+, as an efficient multimodal luminescent material with excitation-wavelength-dependent emission is reported. Under 365 nm and 254 nm UV light excitation, Cs2ZnBr4:Mn2+&Cu+ emits mutually independent green light at 525 nm and blue light at 470 nm, which origin from the emission of Mn2+ and the Cu+ enhanced self-trapped excitons of Cs2ZnBr4, respectively. Furthermore, the multiexcitonic emission is applied to anti-counterfeiting applications and information encryption and decryption engineering. This codoped strategy provides a colorful step to expand the new metal halide materials in fluorescent anti-counterfeiting and information encryption and decryption.
Funder
State Key Laboratory of Integrated Optoelectronics
Science Foundation for Distinguished Young Scholars of Henan Province
National Natural Science Foundation of China
Subject
Condensed Matter Physics,General Materials Science
Cited by
10 articles.
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