کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1618478 | 1005706 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and luminescent properties of Eu3+-activated molybdate-based novel red-emitting phosphors for white LEDs
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
A series of Eu3+-activated molybdate-based phosphors were synthesized. The experimental results indicate that the concentration quenching does not happen in Eu3+-doped Na0.5Gd0.5MoO4 phosphor and the relative emission intensity enhances with the increase of the Eu3+ doping ratio, which reaches a maximum at 50 at.% of Eu3+. The emission intensity of Na0.5Eu0.5MoO4 is about 2.26 times higher than that of Ca0.8MoO4:Eu0.23+. The introduction of Li+ substituting for Na+ does not change shapes and positions of photoluminescence spectra of Na0.5Eu0.5MoO4 but evidently enhances the emission intensity of Eu3+ under 396 nm excitation and the optimal doping concentration of Li+ is 25 at.%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 501, Issue 1, 2 July 2010, Pages 124–129
Journal: Journal of Alloys and Compounds - Volume 501, Issue 1, 2 July 2010, Pages 124–129
نویسندگان
An Xie, Ximing Yuan, Fengxiang Wang, Yu Shi, Jian Li, Li Liu, Zhongfei Mu,