PREPARATION AND PROPERTIES OF CERAMIC MATERIALS IN THE Ag6PS5I‒Ag7GeS5I SYSTEM

This work is devoted to the preparation of dense Ag+ conductive ceramic solid electrolytes in Ag6PS5I‒Ag7GeS5I system and study their electrical optical properties. Using non-destructive simple method diffuse reflectance spectroscopy, value pseudogap energy Ag6+x(P1-xGex)S5I (x=0, 0.25, 0.5, 0.75, 1.0) solutions was obtained using Kubelka-Munk function with application Tauc's graphic method. As a result performed mathematical analysis processing, it established that quaternary chalcohalogenides Ag6PS5I, Ag7GeS5I (x=0.25, 0.75) belong direct-band semiconductors characterized by forbidden transition . The conductivity carried out impedance frequency 1×101–3×105 Hz temperature 293–383 K ranges. For all materials prepared on basis solutions, an increase values total observed, which characteristic ionic state.
 Keywords: argyrodites; solutions; ceramic; spectroscopy; conductivity; properties; pseudogap.