The conductivity of xAgI–(1-x)ZnO (x = 0 to 1) composites at room temperature increased with increasing AgI content, and reached a maximum at about 50%AgI. Results obtained by means of scanning electron microscopy, X-ray diffractometry and photoluminescence spectroscopy had revealed high ionic conduction pathways which were related to the mesoscopic defect structure at AgI/ZnO interfaces and the mesoscopically disordered structure in AgI domain. New optical phenomena were observed which might have arisen from excitation energy transfer between AgI-exciton and a photo-induced O vacancy at the AgI/ZnO interface.

Structural and Optical Studies of Mesoscopic Defect Structure in Highly Conductive AgI–ZnO Composites. F.Fujishiro, S.Mochizuki: Physica B, 2003, 340-342, 216-20