کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5399574 | 1505908 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Full-color-emitting CaYAl3O7:Pr3+,Ce3+ phosphor for near-UV LED-based white light
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Full-color-emitting CaYAl3O7:Pr3+,Ce3+ phosphor for near-UV LED-based white light Full-color-emitting CaYAl3O7:Pr3+,Ce3+ phosphor for near-UV LED-based white light](/preview/png/5399574.png)
چکیده انگلیسی
A full-color-emitting phosphor, CaYAl3O7:Pr3+,Ce3+ was synthesized through conventional solid-state reaction. The structural properties of the phosphor were analyzed by Rietveld refinement, maximum entropy method, and luminescent properties were analyzed by co-activating with different rare earth ions. Photoluminescence spectra on excitation with 450Â nm source were dominated by green band at 490Â nm originating from 3P0â3H4 transition of Pr3+ ions and less intense band at 617Â nm due to 1D2â3H4 transition. On codoping with Ce3+, phosphor exhibits an additional broad band originating from 5d1â4f1 (2F7/2 and 2F5/2) of Ce3+, centered at around 540Â nm due to efficient energy transfer from Pr3+ levels to Ce3+ levels. With this emission property we recommend CaYAl3O7:Pr3+,Ce3+ as potential single-phase full-color-emitting phosphor for solid-state lighting applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 152, August 2014, Pages 176-181
Journal: Journal of Luminescence - Volume 152, August 2014, Pages 176-181
نویسندگان
Sanjith Unithrattil, Kyoung Hwa Lee, Woon Jin Chung, Won Bin Im,