MgSe thin films were prepared by spray pyrolysis method by varying substrate temperature. The effects of the varying substrate temperature on structural, electrical, morphological and optical properties of MgSe thin films were discussed. X-ray diffraction studies confirm the formation of cubic structure with (111) & (200) as the preferred orientation. The optical studies revealed that the deposited MgSe has direct band gap and it varies from 2.60 to 2.45 eV depending on substrate temperature. The electrical resistivity of MgSe decreases with temperature indicating its semiconducting nature. The electrical resistivity, activation energy and optical band gap energy is found to depend upon substrate temperature. Thermo-emf measurement showed that the electrical conductivity in spray deposited MgSe is of p-type.
