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
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Effects of Ge and B substitution on thermoelectric properties of CoSi
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 973 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 1–2, 19 April 2005, Pages 50-54
نویسندگان
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