Effect of the Ge Concentration on the Photoformation of Solid Electrolytes in Ag/As-S-Ge Thin Films

Abstract

Solid electrolytes in the system Ag/As-S-Ge have been fabricated by Ag photodissolution into glassy thin As-S-Ge films of various composition. To realize the transition from a trigonal to a tetragonal structure of the network, the concentration of Ge was increased monotonically, along with a decreased As concentration. The process of Ag photodissolution into the films, followed by the formation of solid electrolytes was controlled by monitoring the changes that occur in the optical transmission of broadband light which is only weakly absorbed in Ag/As-S-Ge.