Amorphous Framework in Electrodeposited CuBiTe Thermoelectric Thin Films with High Room-Temperature Performance.

ABSTRACT: Bismuth telluride-based alloys are the most efficient thermoelectric materials near room temperature and widely used in commercial thermoelectric devices. Nevertheless, their thermoelectric performance needs to be improved further for wide-scale implementation either as a thermoelectric generator or cooler. Here, we propose a simultaneous codeposition of CuBiTe thin films and their phase transition strategy via the traditional electrodeposition process. With just 13 atom % Cu doping, crystalline-to-amorphous phase transformation resulted for the electroplated CuBiTe alloy. A close look at the alloy composition revealed spike-shaped nanocrystalline Bi₂Te₃ embedded in the CuBiTe amorphous matrix. Our result shows an exceptionally high power factor (3.02 mW m^-1

SUBMITTER: Padmanathan N 

PROVIDER: S-EPMC8824429 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature