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Transport characteristics and surface potential distribution of electrically stressed TiO 2 single crystals

Title
Transport characteristics and surface potential distribution of electrically stressed TiO 2 single crystals
Authors
Kim H.Kim D.-W.
Ewha Authors
김동욱
SCOPUS Author ID
김동욱scopus
Issue Date
2011
Journal Title
Applied Physics A: Materials Science and Processing
ISSN
0947-8396JCR Link
Citation
vol. 102, no. 4, pp. 949 - 953
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
We investigated transport and local electrical properties of Pt/TiO 2 single crystal/Ti planar junctions with micron-sized gaps between the electrodes. Potential profiles, obtained by scanning Kelvin probe microscopy (SKPM), clearly showed that negative (positive) electrical stress to the Pt electrodes significantly reduced (hardly affected) the Pt/TiO 2 contact resistance. In addition, the SKPM results revealed that the electrical stress caused modification of resistance and local work function of the TiO 2 surface. All the results suggested that the electrical stress caused alteration of physical properties at the TiO 2 surface between the electrodes as well as the Pt/TiO 2 interface. © Springer-Verlag 2011.
DOI
10.1007/s00339-011-6277-4
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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