The Structure And Stability Of Molybdenum Ditelluride Thin Films

Molybdenum-tellurium alloy thin films were fabricated by electron beam evaporation and the films were annealed in different conditions in N-2 ambient. The hexagonal molybdenum ditelluride thin films with well crystallization annealed at 470 degrees C or higher were obtained by solid state reactions. Thermal stability measurements indicate the formation of MoTe2 took place at about 350 degrees C, and a subtle weight-loss was in the range between 30 degrees C and 500 degrees C. The evolution of the chemistry for Mo-Te thin films was performed to investigate the growth of the MoTe2 thin films free of any secondary phase. And the effect of other postdeposition treatments on the film characteristics was also investigated.