کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6599035 | 1423883 | 2018 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the crystal structure and luminescence characteristics of a novel deep red emitting SrLaScO4:Mn4+
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
A novel Mn4+ activated SrLaScO4 was synthesized and investigated for its crystal structure and optical characteristics. SrLaScO4 exhibits a well-known K2NiF4 structure, it crystalizes in Abma space group and provides an octahedral site of ScO6 which was exploited for Mn4+ incorporation. The synthesized phosphor showed broad excitation bands and an uncommon narrow emission band centered at 690â¯nm with an full width at half maximum (FWHM) of â¼35â¯nm. The optimal activator ion concentration for SrLaScO4:Mn4+ was found to be â¼0.8â¯mol%. The photoluminescence and photoluminescence excitation characteristics indicate that it can be opted as red emitting material for the white LEDs for indoor agriculture where the deep red emissions are favored. However the tendency of luminescence quenching in the phosphor is very high and â¼85% of original intensity is damped with a temperature rise of 150°C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dyes and Pigments - Volume 152, May 2018, Pages 127-130
Journal: Dyes and Pigments - Volume 152, May 2018, Pages 127-130
نویسندگان
Usama Bin Humayoun, Sintayehu Nibret Tiruneh, Dae-Ho Yoon,