Strong upconverting and downshifting emission of Mn2+ ions in a Yb,Tm:NaYF4@NaLuF4/Mn:CsPbCl3 core/shell heterostructure towards dual-model anti-counterfeiting

Jun Zhao; Gencai Pan; Wen Xu; Suyue Jin; Huafang Zhang; Huiping Gao; Miao Kang; Yanli Mao

doi:10.1039/d0cc05663d

Strong upconverting and downshifting emission of Mn²⁺ ions in a Yb,Tm:NaYF₄@NaLuF₄/Mn:CsPbCl₃ core/shell heterostructure towards dual-model anti-counterfeiting

Chem Commun (Camb). 2020 Dec 4;56(93):14609-14612. doi: 10.1039/d0cc05663d. Epub 2020 Nov 5.

Authors

Jun Zhao¹, Gencai Pan, Wen Xu, Suyue Jin, Huafang Zhang, Huiping Gao, Miao Kang, Yanli Mao

Affiliation

¹ International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, School of Physics and Electronics, Henan University, No. 1 Jinming Street, Kaifeng, 475004, P. R. China. pangencai@henu.edu.cn ylmao@henu.edu.cn.

PMID: 33150886
DOI: 10.1039/d0cc05663d

Abstract

Herein, a Yb,Tm:NaYF₄@NaLuF₄/Mn:CsPbCl₃ quasi-core/shell heterostructure is synthesized with the assistance of silica. The strong upconverting and downshifting emission of Mn²⁺ ions was observed in the nanocomposite with a quasi-core/shell structure. The FRET process further improves the energy utilization efficiency of PQDs for UCNPs, which depends on the quasi-core/shell heterostructure. Considering the dual-model fluorescence emission behavior of Mn²⁺ ions, the stable Yb,Tm:NaYF₄@NaLuF₄/Mn:CsPbCl₃ nanocomposite is used in anti-counterfeiting applications.