Transport properties of thin polycrystalline TiO2(rutile) films were studied as a function of the applied field, temperature, and frequency. TheIhyphen;Vhyphen;Tplots showed that the Poolehyphen;Frenkel emission mechanism is responsible for highhyphen;field dc conduction, while lowhyphen;field ac conductivity is in agreement with the theory of hopping conduction.
展开▼