EXPERIMENTAL INVESTIGATION OF ELECTRICAL PROPERTIES OF BISMUTH SELENIDE THIN FILMS

Developing high efficient energy materials with low toxicity is present need of research. Today bismuth selenide, a topological insulator has attracted great attention due to its electrical properties. Solid samples of bismuth selenide of different elemental ratio of Bi/Se have been prepared by solid state reaction and thin films of these solid sample have been deposited on glass substrate using thermal evaporation technique. Transport properties of bismuth selenide thin films were investigated. Electric properties of these films were studied by Hall measurements. A comparative study among different thin films along with annealing effect has been reported.