Hole-transport barrier and band bending at the indium tin oxide/polymer/ p-AlGaN interface

Research output: Contribution to journalArticle

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Abstract

Nonalloyed Ohmic contacts on p-AlGaN were achieved using a thin polymer film [i.e., poly(3,4-ethylenedioxythiophene) (PEDOT) doped with poly(4-styrenesulfonate)] as an interlayer for the electronic modification of indium tin oxide/ p-AlGaN contacts. The electronic properties were investigated by current-voltage measurements and x-ray photoelectron spectroscopy (XPS). According to XPS measurements, the authors found a slight reduction in the surface band bending of p-AlGaN following PEDOT coating and the disappearance of the barrier for hole transport at indium tin oxide/PEDOT/ p-AlGaN interfaces.

Original languageEnglish
Article number152121
JournalApplied Physics Letters
Volume89
Issue number15
DOIs
Publication statusPublished - 2006 Oct 20

Fingerprint

indium oxides
x ray spectroscopy
tin oxides
photoelectron spectroscopy
polymers
electronics
electrical measurement
electric contacts
interlayers
coatings

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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title = "Hole-transport barrier and band bending at the indium tin oxide/polymer/ p-AlGaN interface",
abstract = "Nonalloyed Ohmic contacts on p-AlGaN were achieved using a thin polymer film [i.e., poly(3,4-ethylenedioxythiophene) (PEDOT) doped with poly(4-styrenesulfonate)] as an interlayer for the electronic modification of indium tin oxide/ p-AlGaN contacts. The electronic properties were investigated by current-voltage measurements and x-ray photoelectron spectroscopy (XPS). According to XPS measurements, the authors found a slight reduction in the surface band bending of p-AlGaN following PEDOT coating and the disappearance of the barrier for hole transport at indium tin oxide/PEDOT/ p-AlGaN interfaces.",
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Hole-transport barrier and band bending at the indium tin oxide/polymer/ p-AlGaN interface. / Lin, Yow-Jon.

In: Applied Physics Letters, Vol. 89, No. 15, 152121, 20.10.2006.

Research output: Contribution to journalArticle

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