English, Article edition: ADSORPTION AND DISSOCIATION OF PH3 ON SiGe(100) (2 Ã 1) SURFACE MUSTAFA TÃRKMENOÄLU; ÅENAY KATIRCIOÄLU

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Bookmark: http://trove.nla.gov.au/version/83903
Physical Description
  • article
Language
  • English

Edition details

Title
  • ADSORPTION AND DISSOCIATION OF PH3 ON SiGe(100) (2 Ã 1) SURFACE
Author
  • MUSTAFA TÃRKMENOÄLU
  • ÅENAY KATIRCIOÄLU
Physical Description
  • article
Notes
  • The most stable structures for the adsorption and dissociation of phosphine (PH3) on SiGe(100) (2 Ã 1) surface have been investigated by relative total energy calculations based on density functional theory. According to the optimization calculations, PH3 is adsorbed on the Si (down) and Ge (down) site of the GeâSi and GeâGe dimers on SiGe surface, respectively. The PH2 and H products have been found to be thermodynamically favored in the dissociation path of PH3 on SiGe surface when the system is thermally activated. Although PH3 is adsorbed on the GeâGe and GeâSi dimers directly, it dissociates on the SiGe surface by passing through a transition state. The asymmetric GeâSi and GeâGe dimers on SiGe surface are found to be approximately symmetric after the dissociation of PH3 on the surface. The present work has showed that PH2 prefers to be adsorbed on Ge site of the GeâSi dimer. Therefore, the adsorption of PH2 on Ge site of the GeâSi dimer, while PH3 being dissociated on the Si site, has indicated the migration of PH2 on SiGe surface.
  • Adsorption and dissociation, PH3, SiGe(100) (2 Ã 1) surface, models and computational method
  • RePEc:wsi:srlxxx:v:15:y:2008:i:03:p:307-317
Language
  • English
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