کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5401425 1505927 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tunable upconversion luminescence and energy transfer process between Yb3+ and Er3+ in the CaY4F14
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Tunable upconversion luminescence and energy transfer process between Yb3+ and Er3+ in the CaY4F14
چکیده انگلیسی

Yb3+/Er3+ codoped CaY4F14 materials with tunable upconversion (UC) emission were prepared by a high temperature solid-state method. Based on the UC luminescence properties investigations, it was found that, under 980 nm excitation, CaY4F14:Yb3+,Er3+ showed green-yellow-red upconversion luminescence by changing the composition of the Yb3+-Er3+ dopants. It was also found that the green and red emissions originated from the two photon processes, and the ground-state absorption (GSA), excited-state absorption (ESA) and energy transfer (ET) processes between Er3+/Yb3+ ions were involved in the upconverted emission mechanism. The measured lifetimes show a strong dependence on Yb concentration.

▶ Yb3+/Er3+ codoped CaY4F14 materials with tunable upconversion (UC) emission were prepared. ▶ CaY4F14:Yb3+, Er3+ showed green-yellow-red upconversion luminescence by changing the composition of the Yb3+-Er3+ dopants. ▶ Measured lifetimes show a strong dependence on Yb concentration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 133, January 2013, Pages 226-229
نویسندگان
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