Bi2Te3 is a thermoelectric material with the highest thermoelectric conversion efficiency near room temperature. Bi2Te3 has large anisotropic thermoelectric properties, which can be improved by controlling its crystal orientation. In this study, we investigated the effect of crystal growth of Bi2Te3 thin film by thermal annealing using microwave heating. As a result, we successfully obtained c-axis oriented Bi2Te3 thin films by irradiating with 900 W microwaves for only 3 seconds.
