کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5442849 | 1510768 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Luminescence properties of a novel red-emitting phosphor LaBMO6: Pr3+ (MÂ =Â W, Mo)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A novel blue InGaN-chip-based red-emitting phosphor Pr3+: LaBMO6 (MÂ =Â W, Mo) in pure phase were synthesized via conventional solid-state reaction in air and the photoluminescence properties of the phosphor were investigated for the application in white LEDs. The as-synthesized phosphors were characterized by the X-ray diffraction; diffuse reflection spectra, photoluminescence excitation and emission spectra, the Commission International de L'Eclairage (CIE) chromaticity coordinates and temperature-dependent emission spectra. Orangish red emission band around 575-625Â nm was observed in Pr3+-doped LaBMO6 (MÂ =Â W, Mo) upon 445Â nm excitation. Fluorescence concentration quenching in Pr3+-doped LaBMoO6 were observed and the critical distance between Pr3+ ions for energy transfer was calculated to be 8.369Â nm. The CIE chromaticity coordinates of Pr3+-doped LaBMoO6 were located in the red spectral region and the temperature-dependent luminescence spectra indicated that Pr3+-doped LaBMoO6 show good thermal stability. All results demonstrated the developed Pr3+-doped LaBMO6 (MÂ =Â W, Mo) was a novel red phosphor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 66, April 2017, Pages 474-479
Journal: Optical Materials - Volume 66, April 2017, Pages 474-479
نویسندگان
F.B. Xiong, H.F. Lin, Z. Ma, Y.P. Wang, H.Y. Lin, X.G. Meng, H.X. Shen, W.Z. Zhu,