Long-lived Photon Upconversion Phosphorescence in RbCaF3:Mn2+,Yb3+ and the Dynamic Color Separation Effect
Enhai Song,
Xinxin Han,
Yayun Zhou,
Yu Wei,
Xiao-Fang Jiang,
Shi Ye,
Bo Zhou,
Zhiguo Xia,
Qinyuan Zhang
Affiliations
Enhai Song
State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Materials and Applied Techniques, Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, China
Xinxin Han
State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Materials and Applied Techniques, Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, China
Yayun Zhou
State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Materials and Applied Techniques, Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, China
Yu Wei
State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Materials and Applied Techniques, Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, China
Xiao-Fang Jiang
State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Materials and Applied Techniques, Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, China
Shi Ye
State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Materials and Applied Techniques, Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, China
Bo Zhou
State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Materials and Applied Techniques, Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, China
Zhiguo Xia
State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Materials and Applied Techniques, Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, China
Qinyuan Zhang
State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Materials and Applied Techniques, Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, China; Corresponding author
Summary: The development of luminescence materials with long-lived upconversion (UC) phosphorescence and long luminescence rise edge (LRE) is a great challenge to advance the technology of photonics and materials sciences. The lanthanide ions-doped UC materials normally possess limited UC lifetime and short LRE, restricting direct afterglow viewing in visual images by the naked eye. Here, we show that the RbCaF3:Mn2+,Yb3+ UC luminescence material generates a long UC lifetime of ∼62 ms peaking at 565 nm and an ultralong LRE of ∼5.2 ms. Density functional theory calculations provide a theoretical understanding of the Mn2+-Yb3+ aggregation in the high-symmetry RbCaF3 host lattice that enables the formation of the long-lived UC emission center, superexchange coupled Yb3+-Mn2+ pair. Through screen printing ink containing RbCaF3:Mn2+,Yb3+, the visualized multiple anti-counterfeiting application and information encryption prototype with high-throughput rate of authentication and decryption are demonstrated by the dynamic color separation effect. : Optical Materials; Computational Method in Materials Science; Materials Design Subject Areas: Optical Materials, Computational Method in Materials Science, Materials Design
