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Title: Schottky contact on ZnO nano-columnar film with H2O2 treatment
Authors: Nakamura, Atsushi
Temmyo, Jiro
Journal Title: Journal of Applied Physics
Publisher: American Institute of Physics
Journal Volume: 109
Journal Issue: 9
Start Page: 093517
Issue Date: 2011-05-10
Rights: © 2011 American Institute of Physics
NDC: 549
Abstract: The surface treatment with boiling hydrogen peroxide (H2O2) solution on the surface of ZnO nano-columnar film was investigated. Field emission-SEM and TEM analysis revealed that amorphous ZnO2 layer covers the ZnO nano-column surface through the H2O2 treatment at 100 degrees C for 1 min. X-ray photoemission spectroscopy (XPS) has been conducted on the H2O2 treated ZnO surface. The surface exhibits high resistive conductivity after the H2O2 treatment, suggesting that the treatment promotes a compensation effect. We demonstrate that dramatic improvement in the rectifying behavior on the Schottky diodes can be achieved by inserting a ZnO2 interface layer between the Pt Schottky electrode and the ZnO nano-column film. The ZnO2 interface layer promotes surface passivation and suppresses the surface leakage current. This is expected to increase the Schottky barrier height to 0.78 eV. The H2O2 treated Schottky diode showed five orders of magnitude in current rectification between forward and reverse bias at 3 V. (C) 2011 American Institute of Physics.
ISSN: 00218979 OPAC
DOI: 10.1063/1.3582143   
Journal NCID: AA00693547 OPAC ciniib
Textversion: publisher
Appears in Collections:21. 雑誌論文・記事(Journal Article, Article, Preprint)

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Others By: Nakamura, Atsushi (中村, 篤志) (ナカムラ, アツシ) -- Temmyo, Jiro (天明, 二郎) (テンミョウ, ジロウ)

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