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Eco-friendly p-type Cu2SnS3 thermoelectric material: crystal structure and transport properties.

ABSTRACT: 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.

SUBMITTER: Shen Y

PROVIDER: S-EPMC5036087 | biostudies-other | 2016 Sep

REPOSITORIES: biostudies-other

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Eco-friendly p-type Cu2SnS3 thermoelectric material: crystal structure and transport properties.

Shen Yawei Y Li Chao C Huang Rong R Tian Ruoming R Ye Yang Y Pan Lin L Koumoto Kunihito K Zhang Ruizhi R Wan Chunlei C Wang Yifeng Y

Scientific reports 20160926

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 ...[more]

PMID: 27666524

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