Wang Meng, Yang Ruoting, Cheng Shanshan, Li Gaoqiang, Jia Mochen, Chen Xu, Wu Di, Li Xinjian, Shi Zhifeng
Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, People's Republic of China.
J Phys Condens Matter. 2022 Mar 15;34(20). doi: 10.1088/1361-648X/ac58da.
The growing demand for optical anti-counterfeiting technology requires the development of new environmentally-friendly smart materials with single-component, multimodal fluorescence. Herein, CsZnBr:0.3Mn&0.15Cu, as an efficient multimodal luminescent material with excitation-wavelength-dependent emission is reported. Under 365 nm and 254 nm UV light excitation, CsZnBr:Mn&Cuemits mutually independent green light at 525 nm and blue light at 470 nm, which origin from the emission of Mnand the Cuenhanced self-trapped excitons of CsZnBr, 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.
对光学防伪技术日益增长的需求要求开发具有单组分、多模态荧光的新型环保智能材料。在此，报道了CsZnBr:0.3Mn&0.15Cu作为一种具有激发波长依赖性发射的高效多模态发光材料。在365nm和254nm紫外光激发下，CsZnBr:Mn&Cu分别在525nm发射相互独立的绿光和在470nm发射蓝光，它们分别源于Mn的发射和CsZnBr中Cu增强的自陷激子。此外，多激子发射被应用于防伪应用以及信息加密和解密工程。这种共掺杂策略为在荧光防伪和信息加密和解密方面扩展新型金属卤化物材料提供了丰富多彩的一步。
