کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10633017 | 992962 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
CaSc2O4:Eu3+: A tunable full-color emitting phosphor for white light emitting diodes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: CaSc2O4:Eu3+: A tunable full-color emitting phosphor for white light emitting diodes CaSc2O4:Eu3+: A tunable full-color emitting phosphor for white light emitting diodes](/preview/png/10633017.png)
چکیده انگلیسی
We report an intense full-color emission originating from 5D0,1,2,3 to 7F0,1,2,3,4 transitions of Eu3+ in CaSc2O4 upon 395Â nm excitation. The emission spectra vary with increasing Eu3+ concentration, demonstrating tunable color coordinates from white to red region in the CIE chromaticity diagram. Considering the relaxation from 5DJ to 5DJâ1 through cross energy transfer, the Eu3+ concentration dependent emission spectra are well simulated based on the analysis of steady state rate equations and the measured lifetimes of the 5DJ levels. It is suggested that CaSc2O4:Eu3+ could be a potential single-phased full-color emitting phosphor for near-ultraviolet InGaN chip pumped white light emitting diodes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 33, Issue 3, January 2011, Pages 355-358
Journal: Optical Materials - Volume 33, Issue 3, January 2011, Pages 355-358
نویسندگان
Zhendong Hao, Jiahua Zhang, Xia Zhang, Xiaojun Wang,