Highly Sensitive ZnO Ozone Detectors at Room Temperature

Aluminum doped zinc oxide sputtering targets obtained from nanostructured powders: Processing and application

“…[1][2][3][4][5][6][7][8][9] The electrical conductivity of ZnO is controlled by intrinsic defects such as oxygen vacancies and/or zinc interstitials, which act as ntype donors. When doped with group III elements such as indium, boron, gallium and aluminum the electrical resistivity decrease.…”

Preparation of ZnO-doped Al films by spray pyrolysis technique

“…In addition to potential use as transparent conducting oxide in optoelectric devices, ZnO thin films can also be used for gas sensing because of high sensitivity to many gases [12]. The conductivity of ZnO can change over orders of magnitude after exposure to UV light and subsequent oxidation [13]. Also, ZnO thin film based transistors have recently been proposed to be used as active channel material [14].…”

UV and ozone influence on the conductivity of ZnO thin films

“…It is well known that electrical properties of doped-ZnO varistors depend on grain boundary effects, which are, in principle, characteristics of ZnO bulk structure; the granular morphology is responsible for its low conductivity at low fields, but above a critical field, tunneling effect across the potential barriers at the grain boundaries enhances considerably the material conductivity [6]. New deposition techniques, combined with doping, produced conductive and transparent ZnO thin films, providing the exploration of new technological applications as gas sensors [7], transparent electrodes for OLEDs [8], transparent transistors [9], etc. In addition, its (nano-to-micro)granular and (meso)uniform morphologies, whose grain dimensions varies from tenths nanometers to micrometers, permits to obtain a great variety of ZnO nanostructures [10].…”