Tuning the Upconversion Luminescence Lifetimes of KYb2F7:Ho3+ Nanocrystals for Optical Multiplexing |
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| Authors: | Dr Mingye Ding Prof Daqin Chen Danyang Ma Peng Liu Dr Kaixin Song Dr Hongwei Lu Prof Zhenguo Ji |
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| Affiliation: | 1. College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, P. R. China;2. College of Electronics and Information Engineering, Hangzhou Dianzi University, Hangzhou, P. R. China |
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| Abstract: | Conventional luminescent color coding is limited by spectral overlap and the interference of background fluorescence, thus restricting the number of distinguishable identities that can be used in practice. Here, we demonstrate the possibility of generating diverse time‐domain codes, specially designed for a single emission band, using lanthanide‐doped upconversion nanocrystals. Based on the knowledge of concentration quenching, the upconversion luminescence kinetics of KYb2F7: Ho3+ nanocrystals can be precisely controlled by modifying the dopant concentration of Ho3+ ions, resulting in a tunable emission lifetime from 75.8 to 1944.5 μs, which suggests the practicality of these time‐domain codes for optical multiplexing. |
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| Keywords: | emission decay luminescence nanocrystals optical multiplexing upconversion |
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