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Laser and Thermal Induced Reactions of Mo(CO)6, CH3CH2OH, and NO on Si(111)7 × 7

Published online by Cambridge University Press:  28 February 2011

Z. Ying  and
W. Ho
Z. Ying
Affiliation:
Laboratory of Atomic and Solid State Physics and Materials Science Center Clark Hall, Cornell University, Ithaca, New York 14853-2501
W. Ho
Affiliation:
Laboratory of Atomic and Solid State Physics and Materials Science Center Clark Hall, Cornell University, Ithaca, New York 14853-2501
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Abstract

Laser induced reactions of Mo(CO)6, CH3CH2OH, and NO adsorbed on Si(111)7 × 7 at 257 and 514 nm were studied and compared with thermally induced reactions under ultrahigh vacuum conditions utilizing laser induced desorption spectroscopy, thermal desorption spectroscopy, high resolution electron energy loss spectroscopy, and Auger electron spectroscopy. By using continuous wave laser irradiation, photolytic effects are clearly distinguished from pyrolytic effects. Mo(CO)6 and CH3CH2OH adsorbed on Si behave similarly as in the gas phase, whereas a substrate-mediated reaction channel is observed for NO adsorbed on Si.

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