Preparation of Vacuum-Deposited Films of Rubidium Silver Iodide

Vacuum‐deposited thin films of have been prepared exhibiting conductivities of 0.25 ohm‐cm −1 at 25°C and an activation energy of 2.3 kcal/mole. The purest films of were produced when the evaporation source composition was 83–85 mole per cent (m/o) AgI. Electrolytic cells were prepared of the type and werestudied by cyclic voltammetry with a silver reference electrode and as coulometers. Cells could be cycled electrochemically over 1000 times, but coalescence of films eventually led to loss of e electrode contact. Degradation was accelerated when the cells were exposed to humid air.