کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5460679 | 1516172 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation and band gap tailing of ternary Zn1âxCdxWO4 nanocrystals by mechanical alloying
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
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چکیده انگلیسی
Zn1âxCdxWO4(x = 0-1) nanocrystals were fabricated by mechanical alloying in the air. The high impact energy of SPEX machine transformed the single oxides of ZnO, CdO and WO3 with a designed molar ratio into the ternary Zn1âxCdxWO4 compounds through mechanochemical reaction. The as-milled products exhibit single phase without any impurity, have an average size less than 10 nm, perform indirect band gap semiconductor feature and tunable band gap energies upon the composition x. The resulting nanocrystals show a linear lattice parameter-composition and quadratic band gap-composition relationships. The valence band edge of the ternary oxides shifts to lower energy side with x value, which enlarges the band gap of the compound.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 722, 25 October 2017, Pages 88-93
Journal: Journal of Alloys and Compounds - Volume 722, 25 October 2017, Pages 88-93
نویسندگان
Ke Li, DebeshDevadutta Mishra, Guolong Tan,