Ca_(2)SnO_(4):Eu3+陶瓷的光致变色及光强调控特性研究  

Photochromic and light intensity modulation properties of Ca_(2)SnO_(4):Eu^(3+)ceramics

作　　者：陈浩 惠增哲[1] 郭菲菲 龙伟[1] 张小丽 方频阳[1] 李晓娟[1] CHEN Hao;XI Zengzhe;GUO Feifei;LONG Wei;ZHANG Xiaoli;FANG Pinyang;LI Xiaojuan(School of Materials&Chemical Engineering,Xi'an Technological University,Xi'an 710016,China;School of Electronics&Information Engineering,Ankang University,Ankang 725000,China)

机构地区：[1]西安工业大学材料与化工学院,西安710021 [2]安康学院电子与信息工程学院,陕西安康725000

出　　处：《功能材料》2024年第1期1117-1123,共7页Journal of Functional Materials

基　　金：国家自然科学基金项目(12174004,51472197);陕西省教育厅一般专项(23JK0271);陕西省高校科协青年人才托举计划项目(20220442);安康学院校级项目(2022AYQN09)。

摘　　要：开发光辐射响应好、稳定性强的光致变色材料是无机光致变色材料研究的一大目标。研究采用高温固相反应法制备了稀土离子Eu^(3+)掺杂的光致变色陶瓷Ca_(2.02-x)SnO_(4):xEu^(3+)。对陶瓷的光致变色行为展开研究,发现在290 nm光照下着色效果最好,陶瓷由白色变为灰色。440 nm光照8 min后着色陶瓷颜色基本恢复,或者将着色陶瓷加热至623 K后灰色完全消失。光致发光性能研究表明395、466和534 nm可激发出以617 nm为主的红色光发射。研究了陶瓷的光强调控特性,发现290 nm光照射能使陶瓷的发射光谱强度显著降低,617 nm处有最高着色光强调制率86.9%。经过10个循环的着色-漂白实验,陶瓷光强调控性能保持稳定,表现出良好的可逆性。陶瓷的光致变色行为和光强调控行为表现出明显的特征UV波长响应和UV光辐射累积响应特点,表明该材料有望应用于光辐射剂量探测领域。The development of photochromic materials with good response to optical radiation and high stability is a major goal in the research of inorganic photochromic materials.In this study,rare earth ion Eu^(3+)doped photochromic ceramics Ca_(2.02-x)SnO_(4):xEu^(3+)were prepared by high temperature solid phase reaction method.The photochromic properties of ceramics were investigated,finding that the best coloring effect was achieved under 290 nm light,and the ceramics changed from white to gray.The color of the colored ceramics basically recovered after 8 min of 440 nm light,or the gray color completely disappeared after heating the colored ceramics to 623 K.Photoluminescence properties show that 395 nm,466 nm and 534 nm can excite red light emission dominated by 617 nm.The light intensity modulation properties of the ceramics were investigated,finding that 290 nm light irradiation could significantly reduce the intensity of the emission spectra of the ceramics,and there is a maximum coloring light intensity modulation rate of 86.9% at 617 nm.After ten cycles of coloring-bleaching experiments,the ceramic modulation properties remained stable and showed good reversibility.The photochromic behavior and light intensity modulation behavior of this ceramics show obvious characteristic UV wavelength response and UV light radiation accumulation response characteristics,indicating that this material is expected to be applied in the field of optical radiation dose detection.

关 键 词：光致变色 光强度 光致发光 光辐射探测 可逆性 

分 类 号：O432.2[机械工程—光学工程]