Luminescence quenching properties of Sr2Ga2GeO7: Pr3+ with and without traps participation

被引：12

作者：

Liu, Zhichao ^{[1
]}

Ma, Hongqing ^{[2
]}

Zhao, Lei ^{[3
]}

Bian, Wenjuan ^{[4
]}

Xu, Xuhui ^{[1
]}

Fan, Xiaotong ^{[1
]}

Yang, Xiuxia ^{[1
]}

Tian, Shuyu ^{[1
]}

Qiu, Jianbei ^{[1
]}

Yu, Xue ^{[1
]}

机构：

[1] Kunming Univ Sci & Technol, Coll Mat Sci & Engn, Kunming 650093, Yunnan, Peoples R China

[2] Linyi Univ, Coll Resources & Environm, Shandong Prov Key Lab Soil Conservat & Environm P, Linyi 276000, Peoples R China

[3] Baoji Univ Arts & Sci, Sch Phys & Optoelect Technol, Baoji 721016, Shaanxi, Peoples R China

[4] New Mexico State Univ, Dept Chem Engineer, Las Cruces, NM 88003 USA

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2019年 / 271卷

基金：

中国国家自然科学基金;

关键词：

Thermal quenching; Mechanism; Partial energy transition; IVCT; THERMAL-STABILITY; PHOSPHOR; PHOTOLUMINESCENCE; MODULATION; EFFICIENT; EU2+;

D O I：

10.1016/j.jssc.2018.12.041

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Thermal quenching has been extensively regarded as one of the most significant challenges that limits the application of phosphors in today's world. Further effort is urgently required to understand the mechanism of thermal stability for achieving the improved performance of these phosphors. Sr2Ga2GeO7: Pr3+ has been synthesized by the conventional high temperature solid state reaction. A dominant green emitting is presented for the partial energy transition quenching process of the P-3(0)-> H-3(4) emission. The defect states structure is improved via the introducing of co-solvents, and the thermal stability of D-1(2)-> H-3(4) and P-3(0)-> H-3(4) levels can be further adjusted. The intervalence charge transfer (IVCT) and traps are introduced to explain the luminescence quenching properties of Sr2Ga2GeO7: Pr3+. The synergy of various models will provide a new idea for improving the luminescence stability of phosphors in the future.

引用

页码：23 / 28

页数：6

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