Influence of Mn-oxide Nanoclusters on the Electric Properties of ZnO:Mn Films

Polycrystalline ZnO:Mn films have been deposited on Si substrates by using ultrasonic spray pyrolysis methods. ZnO:Mn (3%) films show hysteretic behaviors in the I-V curves and these behaviors are related to charging and discharging of Mn-oxide nanoclusters. The conditions for hysteresis to appear depend on the sizes of the formed Mn-oxide nanoclusters close to the electrode interfaces.