کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5399034 | 1392672 | 2016 | 41 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
NIR luminescence from erbium doped (100âx)SiO2:xZnO powders obtained by soft chemical synthesis
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
We present the structural and optical results of (100âx)SiO2:xZnO compounds with x=0, 20, 40, 60, 80, and 100, containing 1Â mol% of Er3+ prepared by a simple chemical route. It was evaluated the crystallization effect on the erbium ions emission around 1533Â nm due to 4I13/2â4I15/2 transition. Structural analyses using X-Ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR) techniques showed that the prepared material present crystalline phases, the ZnO hexagonal (Zincite) and Zn2SiO4 rhombohedral. The relative content of crystalline phases as well the optical emissions in the infrared region are dependent on the composition and heat treatments. High-resolution transmission electron microscopy revealed average 5Â nm sized Zn2SiO4 nanocrystals homogeneously dispersed into amorphous silica-based matrix. The Er3+ doped Zn2SiO4 crystalline phase are the most promising material to be used in optical system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 170, Part 2, February 2016, Pages 663-670
Journal: Journal of Luminescence - Volume 170, Part 2, February 2016, Pages 663-670
نویسندگان
L.J.Q. Maia, J.C.V. Santos, J.F. Carvalho, R.R. Gonçalves, A.C. Hernandes, S.J.L. Ribeiro,