Gaas interfaces with octadecyl thiol self-assembled monolayer

Structural and electrical properties

O. S. Nakagawa, S Ashok, C. W. Sheen, J. Martensson, D. L. Allara

Research output: Contribution to journalArticle

89 Citations (Scopus)

Abstract

A passivation layer on chemically etched (100) GaAs surface was synthesized with octadecyl thiol, CH3(CH2)i7SH, and its structural and electrical properties were investigated. The layer is a self-assembled monolayer (SAM) in all-trans- planar-zig-zag conformation and is the first conformationally ordered SAM on any semiconductor surface. The barrier height of GaAs Schottky diodes can be modified by the octadecyl thiol SAM passivation without sacrificing good diode characteristics. Octadecyl and other alkane thiol SAM’s enable introduction of a nano-scale, controlled structure on a GaAs surface and prove useful in an assessing the GaAs surface electrical properties.

Original languageEnglish (US)
Pages (from-to)3759-3762
Number of pages4
JournalJapanese Journal of Applied Physics
Volume30
Issue number12
DOIs
StatePublished - Jan 1 1991

Fingerprint

Self assembled monolayers
thiols
Structural properties
Electric properties
electrical properties
Passivation
passivity
Diodes
Schottky diodes
Paraffins
alkanes
Conformations
diodes
Semiconductor materials

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Nakagawa, O. S. ; Ashok, S ; Sheen, C. W. ; Martensson, J. ; Allara, D. L. / Gaas interfaces with octadecyl thiol self-assembled monolayer : Structural and electrical properties. In: Japanese Journal of Applied Physics. 1991 ; Vol. 30, No. 12. pp. 3759-3762.
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Gaas interfaces with octadecyl thiol self-assembled monolayer : Structural and electrical properties. / Nakagawa, O. S.; Ashok, S; Sheen, C. W.; Martensson, J.; Allara, D. L.

In: Japanese Journal of Applied Physics, Vol. 30, No. 12, 01.01.1991, p. 3759-3762.

Research output: Contribution to journalArticle

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T1 - Gaas interfaces with octadecyl thiol self-assembled monolayer

T2 - Structural and electrical properties

AU - Nakagawa, O. S.

AU - Ashok, S

AU - Sheen, C. W.

AU - Martensson, J.

AU - Allara, D. L.

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