Bi and Sn Co-doping Enhanced Thermoelectric Properties of CuSbS Materials with Excellent Thermal Stability.

CuSbS-based materials composed of nontoxic, low-cost, and earth-abundant elements potentially exhibit favorable thermoelectric performance. However, some key transport parameters and thermal stability have not been reported. In this work, the effects of Bi and Sn co-doping on thermoelectric properties and the thermal stability of CuSbS were studied by experiment and theoretical validation.