Electrical conductivity and electronic absorption studies on Ag<inf>2</inf>CdI<inf>4</inf> thin films

The preparation and characterisation of Ag2CdI4 thin films by vacuum evaporation technique are discussed. Electrical conductivity studies have been carried out on the films in the temperature range 30°C to 100°C. The conductivity at room temperature (30°C) is of the order of 10-6 (ohm cm)-1 and above 80°C the conductivity value is 10-3 (ohm cm)-1. Electronic absorption studies carried out at room temperature and liquid nitrogen temperature show the presence of a forbidden internal transition in Ag+ ion, an exciton state and a broad band due to silver aggregates. © 1983.