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Mechanism for p-type conduction in polycrystalline indium oxide films

AuthorsStankiewicz, Jolanta; Lozano, María Pilar; Villuendas, Francisco
Issue Date2012
PublisherAmerican Physical Society
CitationPhysical Review B 85(12): 125306 (2012)
AbstractWe report results of ac impedance measurements which we have obtained from intrinsic indium oxide films under UV irradiation and in darkness. We find two distinct contributions to the ac conductivity. One of them is brought about by grain boundaries, and the other one by inversion layers, which are on grain surfaces. In addition, we have found that photocurrents relax extremely slowly in these films. All of this fits consistently within a model in which mobile holes in inversion layers are responsible for recently reported p-type dc conductivity. © 2012 American Physical Society.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.85.125306
Identifiersdoi: 10.1103/PhysRevB.85.125306
issn: 1098-0121
e-issn: 1550-235X
Appears in Collections:(ICMA) Artículos
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