کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7839861 | 1505860 | 2018 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Abnormal photo-stimulated luminescence in Ba2Ga2GeO7: Tb3+, Bi3+
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A novel green-emitting phosphor Ba2Ga2GeO7: Tb3+, Bi3+ was successfully synthesized by solid-state reaction. The photoluminescence (PL), photo-stimulated luminescence (PSL) and long persistent luminescence (LPL) were investigated in detail. After pre-irradiation upon UV light, the PSL spectrum of Ba2Ga2GeO7: Tb3+, Bi3+ exhibits peaks centered at 493, 547, 589, and 627â¯nm under excitation at 980â¯nm, ascribed to the transitions of 5D4â7Fj (jâ¯=â¯3, 4, 5, 6) by tunneling process. While PL spectrum exhibits peaks related to the transitions of 5D3, 5D4â7Fj (jâ¯=â¯3, 4, 5, 6). Thermo-luminescence (TL) curve shows that a large amount of traps can be in Ba2Ga2GeO7: Tb3+ by induced Bi3+, leading to the improvement of PSL spectra performance. These findings open a vista of possible avenues for the understanding of the PSL process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 202, October 2018, Pages 414-419
Journal: Journal of Luminescence - Volume 202, October 2018, Pages 414-419
نویسندگان
Shuyu Tian, Lei Zhao, Wenbo Chen, Zhichao Liu, Xiaotong Fan, Qiuhong Min, Huan Yu, Xue Yu, Jianbei Qiu, Xuhui Xu,