کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1515133 | 994535 | 2016 | 7 صفحه PDF | دانلود رایگان |
A series of SnTe-AgSbSe2 composites were synthesized by a zone-melting method. The nanostructure of the composites was determined by the high resolution transmission electron microscope. The results show that the lattice thermal conductivity is decreased to ∼0.6 W/m·K at 820 K due to the intense scattering of phonon. Also, the carrier concentration increases with AgSbSe2 amounts, and a large effective mass of ∼ 4m0 at room temperature appears at a high carrier concentration of ∼2 × 1021/cm3. A relatively high thermoelectric figure of merit ZT of 0.92 at 820 K is obtained by composition optimization. It is indicated that the SnTe-AgSbSe2 composite should be a promising thermoelectric material.
Nano-composites SnTe - AgSbSe2 have been synthesized by the zone melting method. The lowest lattice thermal conductivity reaches ∼ 0.6 W/m·K at 820 K, due to nanostructuring. The maximum figure of merit ZT is 0.92 in SnTe – 3% AgSbSe2 at 820 K.Figure optionsDownload as PowerPoint slide
Journal: Journal of Materiomics - Volume 2, Issue 2, June 2016, Pages 165–171