کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1625756 | 1516433 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mn2+-doped Ba2ZnS3 phosphor as a potential luminescent material for white LEDs
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
Mn2+-doped Ba2ZnS3 phosphors for white light emitting diodes (LEDs) have been prepared by high temperature solid-state reaction and their photoluminescence properties are reported. Diffuse reflection spectra of Ba2ZnS3 host and synthesized phosphors have been measured. The excitation spectrum extends a broad range of wavelength and is consistent with the diffuse reflectance spectra. The emission bands are due to 4T1(4G) â 6A1(6S) transition of the Mn2+ ion and there exists efficient energy transfer from host to Mn2+ ions. The dependence of emission wavelength on Mn2+ concentration is studied. The decay curve of Mn2+ ions luminescence in Ba2Zn0.995S3:0.005 Mn2+ is also measured.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 441, Issues 1â2, 30 August 2007, Pages 259-262
Journal: Journal of Alloys and Compounds - Volume 441, Issues 1â2, 30 August 2007, Pages 259-262
نویسندگان
Xinmin Zhang, Heping Zeng, Qiang Su,