کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5399749 | 1505906 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Li+ co-doping effect on the photoluminescence time decay behavior of Y2O3:Er3+ films
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effect of Li+ co-doping on photoluminescence time decay characteristics of Y2O3:Er3+ is reported for films deposited by ultrasonic spray pyrolysis at 500 °C. The Er3+ content was fixed at 1.5 at% while the Li+ content in the spraying solution was varied from 1 to 4 at% in relation to Y3+. It is observed that the addition of Li+ content up to 2 at%, besides resulting in an increase of the luminescence emission intensity, modifies the luminescence time decay behavior as well. A simple model in which charge transfer from localized centers to the Er3+ ions is used to describe the evolution with time of the luminescence emission. The introduction of Li+ ions in Y2O3:Er3+ seems to have an impact on the charge transfer process and on the total number of Er3+ ions contributing to the luminescence emission.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 154, October 2014, Pages 106-110
Journal: Journal of Luminescence - Volume 154, October 2014, Pages 106-110
نویسندگان
A.N. Meza-Rocha, E.F. Huerta, U. Caldiño, E. Zaleta-Alejandre, H. Murrieta S., J.M. Hernández A., E. Camarillo, Z. Rivera-Álvarez, G.C. Righini, C. Falcony,