کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5400418 | 1505917 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and luminescent properties of high brightness MLa(WO4)2:Eu3+ (M=Li, Na, K) and NaRE(WO4)2:Eu3+ (RE=Gd, Y, Lu) red phosphors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Eu3+-activated double tungstates phosphors MLa(WO4)2 (M=Li, Na, K) and NaRE(WO4)2 (RE=Gd, Y, Lu) have been successfully prepared via the conventional solid-state reaction method. The effects of alkali ions and rare earth ions on the luminescence of MLa(WO4)2:Eu3+ and NaRE(WO4)2:Eu3+ were investigated. In MLa(WO4)2:Eu3+ system the emission intensity was found to decrease with increasing the size of alkali ions, and in NaRE(WO4)2:Eu3+ system the emission intensity can be ordered as follows: Lu>Y>Gd. Moreover, under 393Â nm light excitation all compounds exhibited strong luminescence of 5D0â7F2 at 615Â nm. The excitation spectra implied that these phosphors can absorb not only the emission of near UV-LED chips but also that of blue LED chips. All the results indicate that these phosphors are promising red-emitting phosphors pumped by near-UV or blue light.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 143, November 2013, Pages 14-20
Journal: Journal of Luminescence - Volume 143, November 2013, Pages 14-20
نویسندگان
Linlin Li, Lu Liu, Wenwen Zi, Hong Yu, Shucai Gan, Guijuan Ji, Haifeng Zou, Xuechun Xu,