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Reversible Upconversion Luminescence Modification Based on Photochromism in BaMgSiO 4 :Yb 3+ ,Tb 3+ Ceramics for Anti‐Counterfeiting Applications
Author(s) -
Ren Youtao,
Yang Zhengwen,
Li Mingjun,
Ruan Jiufeng,
Zhao Jingyuan,
Qiu Jianbei,
Song Zhiguo,
Zhou Dacheng
Publication year - 2019
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201900213
Subject(s) - photochromism , materials science , photon upconversion , luminescence , ceramic , optoelectronics , photochemistry , laser , optics , nanotechnology , composite material , chemistry , physics
Reversible upconversion luminescence modification based on photochromism has received considerable interest due to its potential applications in optical storage and high‐sensitivity optical switches. However, stimulation‐induced bleaching by an external thermal field is generally used for photochromism‐induced reversible upconversion luminescence modification, which limits its practical application. In this work, a gray BaMgSiO 4 :Yb 3+ ,Tb 3+ ceramic is prepared, exhibiting the photochromism from gray to pink color when stimulated by 254 nm light. Interestingly, the pink BaMgSiO 4 :Yb 3+ ,Tb 3+ ceramic can be bleached by either a 473 nm laser or thermal stimulation. The reversible change between gray and pink color exhibits excellent reproducibility over several cycles by alternating between 254 and 473 nm (or thermal) light stimulation. The influence of the reversible photochromism of the BaMgSiO 4 :Yb 3+ ,Tb 3+ ceramic on its upconversion luminescence is investigated. Reversible modification of the upconversion luminescence is demonstrated by alternating between 254 and 473 nm (or thermal) light stimulation. For reversible modulation of the upconversion luminescence, excellent reproducibility is realized after several cycles. As an example, the application of the BaMgSiO 4 :Yb 3+ ,Tb 3+ photochromic ceramic as an anti‐counterfeiting agent is described.