Adsorption and decomposition of H2S on InP(100)

Wei Hsiu Hung, Hung Chih Chen, Che Chen Chang, Jyh Tsung Hsieh, Huey Liang Hwang

Research output: Contribution to journalArticle

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Abstract

The adsorption and thermal reaction of H2S on the InP(100) surface is studied by synchrotron radiation (SR) soft X-ray photoelectron spectroscopy. In addition to molecular adsorption, H2S decomposes to form the dissociative species of S, HS, and H on the surface at 100 K. The S atom of the sulfide species preferentially bonds to the In atom, and the H atom generated by the H2S dissociation bonds to the P atom. H2S molecules may physisorb on the surface in the form of an icelike multilayer/cluster at low temperatures, even at low coverages. The irradiation of SR white light can induce an alternative reaction of H2S with the InP surface to form a thicker sulfur layer than that obtained by thermal deposition. The resulting sulfur layer may provide chemical protection for the InP substrate from further reaction.

Original languageEnglish
Pages (from-to)3663-3668
Number of pages6
JournalJournal of Physical Chemistry B
Volume103
Issue number18
Publication statusPublished - 1999 Dec 1

Fingerprint

Synchrotrons
Sulfur
Adsorption
Hot Temperature
Radiation
Decomposition
decomposition
Photoelectron Spectroscopy
Atoms
adsorption
Sulfides
Synchrotron radiation
atoms
synchrotron radiation
sulfur
Light
Temperature
sulfides
Multilayers
X ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Hung, W. H., Chen, H. C., Chang, C. C., Hsieh, J. T., & Hwang, H. L. (1999). Adsorption and decomposition of H2S on InP(100). Journal of Physical Chemistry B, 103(18), 3663-3668.

Adsorption and decomposition of H2S on InP(100). / Hung, Wei Hsiu; Chen, Hung Chih; Chang, Che Chen; Hsieh, Jyh Tsung; Hwang, Huey Liang.

In: Journal of Physical Chemistry B, Vol. 103, No. 18, 01.12.1999, p. 3663-3668.

Research output: Contribution to journalArticle

Hung, WH, Chen, HC, Chang, CC, Hsieh, JT & Hwang, HL 1999, 'Adsorption and decomposition of H2S on InP(100)', Journal of Physical Chemistry B, vol. 103, no. 18, pp. 3663-3668.
Hung WH, Chen HC, Chang CC, Hsieh JT, Hwang HL. Adsorption and decomposition of H2S on InP(100). Journal of Physical Chemistry B. 1999 Dec 1;103(18):3663-3668.
Hung, Wei Hsiu ; Chen, Hung Chih ; Chang, Che Chen ; Hsieh, Jyh Tsung ; Hwang, Huey Liang. / Adsorption and decomposition of H2S on InP(100). In: Journal of Physical Chemistry B. 1999 ; Vol. 103, No. 18. pp. 3663-3668.
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