کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9803901 | 1516475 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of Ge and B substitution on thermoelectric properties of CoSi
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The effects of substitution of Ge and B for Si on the thermoelectric properties of CoSi were studied. The electrical resistivity, Seebeck coefficient, and thermal conductivity of CoSi, CoSi0.98Ge0.02 and CoSi0.995B0.005 were measured from room temperature to 973Â K, and the power factor and figure of merit were evaluated. It was found that the substitution causes a decrease in the electrical resistivity and lattice thermal conductivity, as well as an increase in the absolute value of Seebeck coefficient and power factor. A theoretical analysis indicates the influence of substitution arises mainly from the increased carrier density and point-defect scattering of phonons. The thermoelectric figure of merit is enhanced 25-40% by substitution as compared with that of the nondoped CoSi.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 392, Issues 1â2, 19 April 2005, Pages 50-54
Journal: Journal of Alloys and Compounds - Volume 392, Issues 1â2, 19 April 2005, Pages 50-54
نویسندگان
W.L. Ren, C.C. Li, L.T. Zhang, K. Ito, J.S. Wu,