In the present study, a fabrication technique using self-aligned shadow masking was employed to create thermoelectric single-leg array of Antimony telluride thin film via thermal evaporation technique. The structural properties of the fabricated array were examined using X-ray diffraction, while scanning electron microscopy with EDAX (Energy-dispersive X-ray spectroscopy) was employed to investigate the surface morphology and compositional analysis of the grown thin films. The thermoelectric performance of the array was evaluated using an indigenously developed thermoelectric measurement setup. The results revealed a Seebeck coefficient of 583 μV/K and 568 μV/K respectively for both heating and cooling within the temperature range of 300–498 K.