A facile and effective strategy to synthesize orthorhombic Sr2Al6O11:Eu2+,Dy3+ with blue-green persistent luminescence

1st International Conference on New Material and Chemical Industry

材料科学;化学工业

Han, Juan^1 ; Jiang, Ziqiu^1 ; Zhang, Wenyan^1 ; Hao, Lingyun^1 ; Ni, Yaru^2,3 ; Lu, Chunhua^2,3 ; Xu, Zhongzi^2,3

College of Material Engineering, Jinling Institute of Technology, Nanjing, China^1

Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing, China^2

State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, Nanjing, China^3

关键词: Chemical vapor deposition methods;    Crystal fields;    Green luminescence;    High efficient;    Luminescent emission;    Persistent luminescence;    Photoexcited electrons;    Structural stabilities;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/167/1/012050/pdf
DOI  :  10.1088/1757-899X/167/1/012050

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Sr2Al6O11:Eu2+,Dy3+is known as a high efficient material for generating persistent luminescence. Due to its low structural stability, it is a challenge to prepare such orthorhombic material in large scale. In this work, a facile and effective strategy was designed for the preparation of Sr2Al6O11:Eu2+,Dy3+with high purity by combining the advantages of solid state reaction and chemical vapor deposition method. The prepared Sr2Al6O11:Eu2+,Dy3+could effectively store the UV light energy and emit blue-green luminescence for 240 min by slow liberation of photo-excited electrons. Its blue-green afterglow was composed of two luminescent emissions which released from the Eu centers located in different crystal fields.