Program of Physics and Science Center, Faculty of Science and Technology, Loei Rajabhat University, Loei, Thailand;
Thermoelectrics Research Center, Faculty of Science and Technology, Sakon Nakhon Rajabhat University, Sakon Nakhon, Thailand;
Thermoelectric; Thin; Film; Ca3Co4O9; CaMnO3; Bipolar; Pulsed-DC; Magnetron; Sputtering; System;