Properties of reactively sputtered Ag, Au, Pd, and Pt Schottky contacts on n-type ZnO

作者: A. Lajn , H. v. Wenckstern , Z. Zhang , C. Czekalla , G. Biehne

DOI: 10.1116/1.3086718

关键词: Analytical chemistryPalladiumSputter depositionSchottky diodeWide-bandgap semiconductorSputteringX-ray photoelectron spectroscopyMaterials sciencePhotoconductivityPhotocurrent

摘要: Highly rectifying Ag, Au, Pd, and Pt Schottky contacts have been fabricated on heteroepitaxial pulsed-laser deposited ZnO-thin films by reactive sputtering. X-ray photoelectron spectroscopy revealed an oxidation of the contact material; gold are purely metallic. The necessity a conductive capping oxidized is proven photocurrent measurements AgxO contacts. ideality factors effective barrier heights were determined current-voltage measurements. Capacitance-voltage temperature dependent furthermore carried out to determine mean height, standard deviation respective voltage dependencies taking lateral fluctuations height into account.

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