Sr_(3)Y_(2)Ge_(3)O_(12):Bi^(3+):紫外-可见-近红外超宽带应力发光及性能调控探索  

UV-Visible-NIR Ultrabroadband Mechanoluminesence from Sr_(3)Y_(2)Ge_(3)O_(12):Bi^(3+)and Its Performance Regulation

作　　者：邵佩珊 熊普先 肖窑 覃可欣 孙永胜 陈康 陈东丹[1] 杨中民 SHAO Peishan;XIONG Puxian;XIAO Yao;QIN Kexin;SUN Yongsheng;CHEN Kang;CHEN Dongdan;YANG Zhongmin(School of Materials Science and Engineering,School of Physics and Optoelectronics,The State Key Laboratory of Luminescent Materials and Devices,Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques,Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices,South China University of Technology,Guangzhou 510000,China)

机构地区：[1]华南理工大学材料科学与工程学院,华南理工大学物理与光电学院,发光材料与器件国家重点实验室,广东省光纤激光材料与应用技术重点实验室,广东省特种光纤材料与器件工程技术研究开发中心,广州510000

出　　处：《硅酸盐学报》2022年第12期3092-3102,共11页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金项目(52202003);广东省“珠江人才计划”本土创新科研团队(2017BT01X137);广州市重点领域研发计划项目-新材料重大科技专项(202007020003)。

摘　　要：现有应力发光多局限于单一波段。铋(Bi)离子能实现紫外-近红外波段的超宽发射,但是现有Bi离子激活应力发光材料多限于蓝光发射。针对这一问题,本工作在多格点石榴石化合物(Sr_(3)Y_(2)Ge_(3)O_(12))中率先实现了紫外-可见-近红外超宽带应力发光,并借助近邻离子(Sc^(3+))取代策略调控其应力发光性能。最后,利用热释光测试等得到材料缺陷分布信息,并探究其应力发光机理。最后,基于多模式发光,该材料有望用于信息储存领域。The existing mechanoluminesence has a single band.The^(3)P_(1)→^(1)S_(0)transition of Bi^(3+)ion can achieve an ultrabroadband emission in UV-Visible.However,the existing Bi^(3+)ion activated mechanoluminesence materials only emit blue light.To solve this problem,the UV-Visible-NIR ultrabroadband mechanoluminesence is realized in a multi-lattice garnet compound matrix,and its mechanoluminesent performance is regulated by the neighbor ion(i.e.,Sc^(3+)ion)substitution strategy.The luminescence source is determined by steady-state fluorescence spectroscopy(at 465 nm,corresponding to the^(3)P_(1)→^(1)S_(0)transition of Bi^(3+)ion).The mechanism of mechanoluminesence is related to the persistent luminescence.The material defect distribution is obtained by thermoluminescence test,and the deep trap(>0.7 e V)contributes to the mechanoluminesence.

关 键 词：应力发光 铋离子 近邻离子取代 晶格工程 

分 类 号：TQ422[化学工程]