光致变色
兴奋剂
材料科学
发光
光存储
镧系元素
光电子学
镉
调制(音乐)
三维光学数据存储
光学
化学
纳米技术
物理
离子
冶金
有机化学
声学
作者
Xiaodong Zhu,Anjun Huang,Heping Zhao,Yue Liu,Yangke Cun,Zhiguo Song,Jianbei Qiu,Cherkasova Tatiana,Jiayan Liao,Zhengwen Yang
标识
DOI:10.1002/lpor.202301326
摘要
Abstract Owing to the large storage capacity, the transparent luminescent glass with photo‐induced coloration properties has attracted considerable interest in recent years. However, lots of the photochromic (PC) mechanisms for glass are related to the ionic valence transformation, and the study associated with the defects‐induced photochromism of glass is limited. Herein, a kind of Sm 3+ doped PC cadmium glass is fabricated, for which the PC mechanism is systematically investigated by various techniques, such as XPS spectra, thermoluminescence spectra, EPR spectra, etc. The results show that the mechanism of coloration for such glass should be due to the presence of oxygen vacancy‐related electron centers. Under 365 nm light irradiation, the color of the glass turns from colorless to brown, exhibiting a large color contrast, of 62%. Utilizing the re‐absorption process between absorption spectra and emission/excitation spectra, the emission intensity of Sm 3+ is reversibly regulated, indicating their promising applications as an optical storage medium.
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