PHASE-PROPERTY STUDY OF SEMICONDUCTOR SELENIUM .2. DOUBLE-PHASE SYSTEM

An understanding of the transition from amorphous to crystalline phase is of scientific as well as technological interest, as it defines the operating limits of the materials used for technical applications. For the case of amorphous selenium, this is related to the erasure time in optical data storage applications and to the optical recording energy in holographic applications. This review provides substantial theoretical and experimental results regarding the dependence of different properties on the geometrical structure of a double-phase selenium system. This includes, the time-temperature-transformation (TTT) diagrams for amorphous solid-crystal, and amorphous liquid-crystal mixture phases together with different kinetic and thermodynamic aspects for both isothermal and scanning thermal conditions.