کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7886271 | 1509785 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Largely enhanced mechanoluminescence properties in Pr3+/Gd3+ co-doped LiNbO3 phosphors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Pr3+/Gd3+ co-doped LiNbO3 phosphors were prepared by a traditional solid-state reaction method and their structure, photoluminescence, mechanoluminescence and thermoluminescence were investigated. The results showed that the LiNbO3 phase with a rhombohedral structure and an R3c space group was successfully prepared. Mechanoluminescence intensity in nonstoichiometric LiNbO3:Pr3+ was largely increased by introducing Gd3+ ions. The optimal co-doped concentration of Gd3+ was 1â¯mol% and the enhanced ML intensity of LiNbO3:0.01Pr3+, 0.01Gd3+ was about 177% times compared with that of LiNbO3:0.01Pr3+. The effect of Gd3+ co-dopants on trap levels were explored through thermoluminescence curves. The enhancement of mechanoluminescence intensity was suggested to be ascribed to the regulated trap quantities caused by co-doped Gd3+ ions. Appropriate co-dopants are proved to be effective sensitizers for mechanoluminescence materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 13, September 2018, Pages 15411-15417
Journal: Ceramics International - Volume 44, Issue 13, September 2018, Pages 15411-15417
نویسندگان
Gaojian Qiu, Hua Fang, Xusheng Wang, Yanxia Li,