کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5398002 | 1505880 | 2017 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polycrystalline La0.8Sr0.2GaO3 perovskite synthesized by sol-gel process along with temperature dependent photoluminescence
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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: Polycrystalline La0.8Sr0.2GaO3 perovskite synthesized by sol-gel process along with temperature dependent photoluminescence Polycrystalline La0.8Sr0.2GaO3 perovskite synthesized by sol-gel process along with temperature dependent photoluminescence](/preview/png/5398002.png)
چکیده انگلیسی
This work covers for the first time the protocol of the preparation of nominal composition La0.8Sr0.2GaO3 by the sol-gel method using the citric acid. The structural and the optical properties were investigated, by X-ray diffraction (XRD), Fourier Transform infrared Spectroscopy (FT-IR) and Photoluminescence Spectroscopy (PL) techniques, respectively. The Rietveld refinement, from the X-ray diffraction patterns, showed the presence of La0.63Sr0.21Ga0.95O2.68 perovskite as a major phase which crystallizes in an Hexagonal structure and the appearance of minor impurity phase identified as Gallium Lanthanum Oxide (La4Ga2O9) belonging to a Monoclinic structure. Two peaks indicating blue photoluminescence emission were observed at room temperature. One emission was related to secondary phase and the other was assigned rather to the oxygen deficiency in perovskite structure, leading to the formation of intermediary energy levels in the band gap.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 181, January 2017, Pages 1-7
Journal: Journal of Luminescence - Volume 181, January 2017, Pages 1-7
نویسندگان
F. Belkhiria, F.I.H. Rhouma, S. Hcini, M. Daoudi, H. Gammoudi, M. Amlouk, R. Chtourou,