کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10625854 | 989637 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and characterization of copper gallium diselenide powders prepared from the sol-gel derived precursors
ترجمه فارسی عنوان
سنتز و مشخص کردن پودرهای گلیم بیسلنید مس که از پیش سازهای حاصل از سل ژل تهیه شده است
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
Copper gallium diselenide (CuGaSe2) powders were synthesized via the sol-gel method followed by a selenization process. The sol-gel process can effectively reduce the required synthesis temperature to 400 °C due to enhanced reactivity and improved composition homogeneity. The amount of Cu2Se impurity phase was decreased when sufficient Ga3+ was added to the precursors. CuGaSe2 powders were successfully prepared when the Ga3+/Cu2+ molar ratio was increased to 2. The formation of CuGaSe2 with a pure chalcopyrite structure was confirmed via the Rietveld refinement analysis. With decreasing Ga3+/Cu2+ molar ratios, the particle size of the prepared CuGaSe2 powders was significantly enlarged because the copper selenide phase acted as a flux for the particle growth. The optical absorption spectra revealed the obtained CuGaSe2 to have a band gap of 1.68 eV. The sol-gel method combined with the selenization process was demonstrated to provide a potential approach for fabricating CuGaSe2 materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 39, Issue 8, December 2013, Pages 8641-8647
Journal: Ceramics International - Volume 39, Issue 8, December 2013, Pages 8641-8647
نویسندگان
Zhi-Liang Liu, Fu-Shan Chen, Chung-Hsin Lu,