期刊
ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 26, 页码 31031-31037出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c07809
关键词
double perovskite; lead-free; Cs2NaInCl6; excitation-wavelength-dependent emission; anti-counterfeiting
资金
- Natural Science Foundation of China [22075043, 21875034, 61704093]
- Foundation of Jiangsu Province for Outstanding Young Teachers in University [BK20180064]
The Bi/Sb codoped Cs2Ag0.1Na0.9InCl6 double perovskite material emits blue and yellow lights under the 320 and 360 nm UV lamp, respectively. It also exhibits a high PLQY up to 41% and excellent stability against both air and high temperature, making it a promising anti-counterfeiting material.
The growing demands for optical anti-counterfeiting technology require the development of new environmentally friendly materials with single component, multimodal fluorescence and high stability. Herein, the Bi/Sb codoped Cs2Ag0.1Na0.9InCl6 lead-free double perovskite material is reported as an efficient multimodal luminescence material with excitation-wavelength-dependent emission. When excited by 360 nm UV light, dual-emission is observed at 455 and 560 nm, which comes from the P-3(1)-S-1(0) transition of Sb3+ ions and self-trapped excitons (STEs), respectively. Under the 320 nm UV lamp, the microcrystals show only a blue emission centered at 455 nm. Therefore, the Bi/Sb codoped Cs2Ag0.1Na0.9InCl6 double perovskite emits blue and yellow lights under the 320 and 360 nm UV lamp, respectively. Moreover, the obtained double perovskite shows a high PLQY up to 41% and excellent stability against both air and high temperature, which make it a promising anti-counterfeiting material.
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