Adsorption and decomposition of H2S on InP(100)

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


研究成果: 雜誌貢獻期刊論文同行評審

12 引文 斯高帕斯(Scopus)


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.

頁(從 - 到)3663-3668
期刊Journal of Physical Chemistry B
出版狀態已發佈 - 1999 5月 6

ASJC Scopus subject areas

  • 物理與理論化學
  • 表面、塗料和薄膜
  • 材料化學


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