Advanced Physical Research

The physical properties of functional materials are formed depending on their electronic and crystalline structure. Therefore, it is important to study the structural properties of these materials. By electron diffraction method the processes of phase formation and phase transitions in Cu₂Se – Ga₂Se – In₂Se₃ system thin films have been investigated. By kinematic electron diffraction method it is established that as a result of polycrystalline α – β transformation of CuIn₅Se₈ composition ternary compound has been taken place. There have been revealed the formation conditions and phase equilibrium distributed on condensation plane of phases in the form of CuGa₅(In₅)Se₈ ternary compounds and CuGa₅(In_1-xGa_x)Se₈ composition solid solutions with different ratio of components.