کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5400207 | 1505915 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and luminescence studies of a novel white Dy:K3Y(VO4)2 and yellow emitting phosphor Dy,Bi:K3Y(VO4)2 with potential application in white light emitting diodes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and luminescence studies of a novel white Dy:K3Y(VO4)2 and yellow emitting phosphor Dy,Bi:K3Y(VO4)2 with potential application in white light emitting diodes Synthesis and luminescence studies of a novel white Dy:K3Y(VO4)2 and yellow emitting phosphor Dy,Bi:K3Y(VO4)2 with potential application in white light emitting diodes](/preview/png/5400207.png)
چکیده انگلیسی
Potassium yttrium double vanadates (K3Y(VO4)2) doped with Bi3+ or Dy3+ and codoped with Bi3+ and Dy3+ have been synthesized by solid state reactions at 1000 °C for 48 h and their photoluminescence properties investigated. Efficient energy transfer from the vanadate (VO43â) group or bismuth ions to the rare earth ion has been established by photoluminescence investigation upon UV excitation and results in blue and yellow emissions at 480-489 nm and 572-580 nm respectively. The codoping of Bi3+ and Dy3+ into K3Y(VO4)2 results in enhanced yellow emission band while the blue emission band remains relatively unchanged. The intensities of emission for the studied materials were investigated as a function of different Bi3+ and Dy3+ ion concentrations. The presented results show K3Y(VO4)2 phosphors as potential candidates W-LEDs applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 145, January 2014, Pages 492-497
Journal: Journal of Luminescence - Volume 145, January 2014, Pages 492-497
نویسندگان
Martin M. Kimani, Joseph W. Kolis,