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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Effect of Zn doping on improving crystal quality and thermoelectric properties of borosilicides
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Effect of Zn doping on improving crystal quality and thermoelectric properties of borosilicides

机译:锌掺杂对提高硼硅化物晶体质量和热电性能的影响

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摘要

Transition-metal (Mo, Mn, Fe, Rh, Ti, Cu, Zn) doping was carried out on the borosilicide compound REB44Si2 (RE = rare earth). REB44Si2 compounds exhibit Seebeck coefficients greater than 200 mu V K-1 at high temperatures and unlike most compounds, the figure of merit shows a steep increase at T > 1000 K making them promising high-temperature thermoelectric materials. Although zinc itself does not remain in the final product, zinc doping was found to improve the crystal quality, which has been a long-standing problem for the borosilicides. As a result, a significant increase of the thermoelectric power factor by more than 30% was achieved.
机译:在硼硅化物化合物REB44Si2(RE =稀土)上进行了过渡金属(Mo,Mn,Fe,Rh,Ti,Cu,Zn)掺杂。 REB44Si2化合物在高温下的塞贝克系数大于200μV K-1,与大多数化合物不同,品质因数显示在T> 1000 K时急剧增加,这使它们成为有希望的高温热电材料。尽管锌本身并未保留在最终产品中,但发现掺杂锌可以改善晶体质量,这对硼硅化物一直是一个长期存在的问题。结果,热电功率因数显着提高了30%以上。

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