Abstract
High‐quality p‐type chalcostibite CuSbS2 single crystal is successfully synthesized by zone melting method for investigating fundamental properties. The grown crystal is orthorhombic structure and nearly stoichiometric with slightly Cu‐rich composition. The electrical properties are the hole concentration of 8.0 × 1016 cm−3, conductivity of 0.8 S cm−1, and mobility of 65 cm2 V−1 s−1 by Hall effect measurement at room temperature. Intrinsic low thermal conductivity in CuSbS2 single crystal is 0.9 W mK−1 at room temperature, which is an advantage of thermoelectric material. These results indicate that CuSbS2 has potential as an environmentally friendly high performance thermoelectric material and provide references for the results of characterization on polycrystalline samples.
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