کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5403655 | 1392763 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spectroscopic properties of Ce3+ doped silica annealed at different temperatures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Ce3+-doped silica was synthesized by sol-gel technique. The absorption band at 252 nm of Ce3+-doped silica is close to the main absorption band of Ce(NO3)3 solution. Three different luminescence bands were observed in the samples annealed at temperatures from 100 to 1200 °C, and the intensity of these luminescence bands changed with the alteration of the heat-treating temperatures. In addition to two well-known main luminescence bands of 4f-5d transition of Ce3+ with the wavelength at 357 and 450 nm, a rarely reported luminescent band with the wavelength at 344 nm was also observed, which was attributed to some kind of oxygen-related defects of silica.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 124, Issue 1, May 2007, Pages 151-156
Journal: Journal of Luminescence - Volume 124, Issue 1, May 2007, Pages 151-156
نویسندگان
G.Q. Xu, Z.X. Zheng, W.M. Tang, Y.C. Wu,