Synthesis and thermoelectric/electrical characterization of electrodeposited SbxTey thin films

Materials Research Bulletin 47(10) 2748-2751

https://doi.org/10.1016/j.materresbull.2012.04.140

Jae-Hong Lim, MiYeong Park, Dong-Chan Lim, Nosang V. Myung, Jung-Ho Lee, Young-Keun Jeong, BongyoungYoo, Kyu Hwan Lee

Abstract

SbxTey films were potentiostatically electrodeposited from acidic nitric baths at room temperature by controlling the applied potential. Near-stoichiometric Sb2Te3 thin films were obtained at applied potentials between −0.15 and −0.30V vs. saturated calomel electrode (SCE). Post-annealing in a reducing environment resulted in an improvement in the crystal structure without the evaporation of the Te element. This result was indicated by a significant reduction in the electrical resistance and decrease in the FWHM of the main diffraction peaks. The power factor (σS2) increased from 44.2 to 372.1μW/mK2 after annealing at 473K.