Effects of ultraviolet treatment on the contact resistivity and electronic transport at the Ti/ZnO interfaces

Yow-Jon Lin, Chia Lung Tsai, W. R. Liu, W. F. Hsieh, C. H. Hsu, Hou Yen Tsao, Jian An Chu, Hsing Cheng Chang

Research output: Contribution to journalArticle

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Abstract

We report on the effect of ultraviolet (UV) treatment on the specific contact resistance (ρ) and electronic transport at the Ti/ZnO interfaces. The experimental results show the same barrier height of Ti/ZnO samples without UV treatment as Ti/ZnO samples with UV treatment and the higher ρ of Ti/ZnO samples with UV treatment than Ti/ZnO samples without UV treatment, suggesting the barrier-height independence of ρ. Based on the thermionic-emission model and x-ray photoelectron spectroscopy results, we found that the induced decrease in the number of the hydroxides at the surface region of ZnO by UV treatment resulted in decreases in the electron concentration near the surface region and the excess current component related to tunneling, increasing in ρ of Ti/ZnO samples.

Original languageEnglish
Article number013701
JournalJournal of Applied Physics
Volume106
Issue number1
DOIs
Publication statusPublished - 2009 Jul 24

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electric contacts
electrical resistivity
electronics
thermionic emission
contact resistance
x ray spectroscopy
hydroxides
photoelectron spectroscopy
electrons

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Lin, Yow-Jon ; Tsai, Chia Lung ; Liu, W. R. ; Hsieh, W. F. ; Hsu, C. H. ; Tsao, Hou Yen ; Chu, Jian An ; Chang, Hsing Cheng. / Effects of ultraviolet treatment on the contact resistivity and electronic transport at the Ti/ZnO interfaces. In: Journal of Applied Physics. 2009 ; Vol. 106, No. 1.
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Effects of ultraviolet treatment on the contact resistivity and electronic transport at the Ti/ZnO interfaces. / Lin, Yow-Jon; Tsai, Chia Lung; Liu, W. R.; Hsieh, W. F.; Hsu, C. H.; Tsao, Hou Yen; Chu, Jian An; Chang, Hsing Cheng.

In: Journal of Applied Physics, Vol. 106, No. 1, 013701, 24.07.2009.

Research output: Contribution to journalArticle

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AU - Lin, Yow-Jon

AU - Tsai, Chia Lung

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AU - Chu, Jian An

AU - Chang, Hsing Cheng

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