文摘
In this work, AgxTey-Sb2Te3 heterostructured films are prepared by ligand exchange using hydrazine soluble metal chalcogenide. Because of the created interfacial barrier, cold carriers are more strongly scattered than hot ones and thereby an over 50% enhanced thermoelectric power factor (2 渭W/(cm路K2)) is obtained at 150 掳C. This shows the possibility of engineering multiphases to further improve thermoelectric performance beyond phonon scattering through a low-temperature solution processed route.
Keywords:
Thermoelectric; hot carrier filtering effect; antimony telluride; solution processed; heterostructure; ligand exchange