Study of electrical and microstructural properties of Ag-doped As-S-Se chalcogenide glasses

•Phase separation was confirmed by SEM and EDAX in Ag doped glassy network.•Presence of different phases was directly expressed in the impedance spectra.•Thermally activated hopping conduction mechanism is explained using a CBH model.•IS analysis revealed the presence of a several temperature dependent relaxations.•Improvement of electric properties is observed upon doping with Ag.