Fabrication of Multilayer Core-Shell Structure for High Power Factor in Bi2Te2.7Se0.3 Thermoelectrics
Bi₂Te₃-based thermoelectric materials are attractive near room temperature, but their performance is constrained by sensitive carrier-concentration control, strong crystallographic anisotropy, and compositional instability from volatile Te. Here, a multilayer core-shell structure was fabricated by conformally coating B...