荧光粉
发光
材料科学
光电子学
光存储
三维光学数据存储
紫外线
发光测量
多路复用
可见光谱
兴奋剂
持续发光
光学
物理
计算机科学
电信
热释光
作者
Dangli Gao,Zhigang Wang,Qi Pang,Qingqing Kuang,Feng Gao,Xiangyu Zhang,Sining Yun,Xiaojun Wang
标识
DOI:10.1002/adom.202300303
摘要
Abstract UV‐charged optical stimulated single‐band phosphors are being used for single‐level optical data storage because of their ability to easily write/read information by light. In contrast, UV–visible–NIR rechargeable optical stimulated double‐band phosphor is urgently necessary for multiplexed high‐throughput optical data storage. Here, the authors design and synthesize Mn 2+ ,Cr 3+ co‐doped zinc gallate storage persistent phosphor that exhibits strong red‐green bicolor persistent luminescence (PersL). Besides the traditional ultraviolet charging, the phosphor can be effectively and repeatedly charged by using visible and NIR light by one‐ or two‐photon process. Interestingly, red and green PersL exhibit the opposite temperature dependence, which is extremely important for multilevel information storage. The mechanism of temperature‐dependent PersL intensity based on different trap types and filling approaches for the double luminescence centers is proposed. The phosphor promises a sophisticated application in optical data storage of wavelength multiplexing.
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