In this work, Bi2Te2.7Se0.3 powder were synthesized by a hydrothermal method using BiCl3 , Te and Se powder as starting materials . Then 100 nm thin film of Bi2Te2.7Se0.3 fabricated by physical vapor deposition . Morphology of the prepared samples were investigated by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) . The hexagonal structure was observed for both of powder and thin film from the XRD results . The crystallite size of 8 to 20 nm were obtained using Scherrer equation . The thermoelectric measurement was carried out on the thin film sample .The Seebeck coefficient of -139.11 μv/k electrical resistivity of 7.03 μΩm and power factor of 2.748 × 10 -3 W/mk2 were achieved for the sample .

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