Eco-friendly p-type Cu(2)SnS(3) thermoelectric material: crystal structure and transport properties.
Eco-friendly p-type Cu(2)SnS(3) thermoelectric material: crystal structure and transport properties.
复制标题
环保p型Cu2SnS3热电材料:晶体结构和输运特性
DOI:
10.1038/srep32501
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发表时间:
2016-09-26
影响因子:
4.6
通讯作者:
Wang Y
中科院分区:
文献类型:
--
作者:
Shen Y;Li C;Huang R;Tian R;Ye Y;Pan L;Koumoto K;Zhang R;Wan C;Wang Y
As a new eco-friendly thermoelectric material, copper tin sulfide (Cu2SnS3) ceramics were experimentally studied by Zn-doping. Excellent electrical transport properties were obtained by virtue of 3-dimensionally conductive network for holes, which are less affected by the coexistence of cubic and tetragonal phases that formed upon Zn subsitition for Sn; a highest power factors ~0.84 mW m−1 K−2 at 723 K was achieved in the 20% doped sample. Moreover, an ultralow lattice thermal conductivity close to theoretical minimum was observed in these samples, which could be related to the disordering of atoms in the coexisting cubic and tetragonal phases and the interfaces. Thanks to the phonon-glass-electron-crystal features, a maximum ZT ~ 0.58 was obtained at 723 K, which stands among the tops for sulfide thermoelectrics at the same temperature.
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