کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5458931 | 1516175 | 2017 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Multicolor and white light emitting Tb3+/Sm3+ co-doped zinc phosphate barium titanate glasses via energy transfer for optoelectronic device applications
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
A series of Tb3+/Sm3+ co-doped ZPBT glasses have been successfully prepared via melt quenching technique and their photoluminescence properties and energy transfer mechanism were investigated. Tb3+ doped glass exhibits dominant emission peak at 544 nm corresponding to 5D4â7F5 transition under 375 nm excitation whereas Sm3+ doped glass exhibits intense emission peak at 599 nm corresponding to 4G5/2 â 6H7/2 under 399 nm excitation. The CIE chromaticity coordinates (0.259, 0.590) and (0.570, 0.428) are located in the pure green and orange region for Tb3+ and Sm3+ doped glasses, respectively. The Tb3+/Sm3+ co-doped glasses under 375 nm excitation emit a combination of blue, green and orange-red light while under 484 nm excitation emits green and red-orange emission light. The energy transfer occurs from Tb3+ to Sm3+ via dipole-dipole interaction, which was confirmed by applying Dexter and Reisfeld's theory and Inokuti Hirayama (I-H) model. Moreover, the energy transfer efficiencies and probabilities were calculated from the decay curves. The color tone of these glasses can be modulated from yellowish-green to warm-white via greenish-yellow by appropriate tuning of Sm3+ concentrations and excitation wavelengths. These results indicate that the prepared glasses can be a potential candidate for white light as well as solid state lighting applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 719, 30 September 2017, Pages 116-124
Journal: Journal of Alloys and Compounds - Volume 719, 30 September 2017, Pages 116-124
نویسندگان
Kaushal Jha, Amit K. Vishwakarma, M. Jayasimhadri, D. Haranath,