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Proceedings Paper

Photon-driven chemistry of column V hydrides on GaAs(100)
Author(s): John Michael White
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Paper Abstract

The chemistry, driven by 6.4 eV photons, of ammonia, phosphine, and arsine, adsorbed on GaAs(100), is compared. When molecularly adsorbed XH3 (XequalsN, P, and As) at low temperatures, ca. 100 K, is irradiated, molecular desorption and hydride bond cleavage occurs. The branching between these two channels varies strongly with X; desorption is favored for NH3 and As-H Bond cleavage favored for AsH3. The H atoms within the photochemically formed XH2 groups can also be removed with photons, but only by extensive irradiation.

Paper Details

Date Published: 21 July 1994
PDF: 8 pages
Proc. SPIE 2125, Laser Techniques for Surface Science, (21 July 1994); doi: 10.1117/12.180860
Show Author Affiliations
John Michael White, Univ. of Texas/Austin (United States)


Published in SPIE Proceedings Vol. 2125:
Laser Techniques for Surface Science
Hai-Lung Dai; Steven J. Sibener, Editor(s)

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