Laser-Surface Adsorbate Interactions: Thermal vs. Photoelectronic Excitation of Mo(Co)6 on Si(III).

Abstract

Laser induced electronic excitation of adsorbed Mo(CO)6 followed by Carbon Monoxide desorption is observed to occur on Si(111)7x7 irradiated with 257 nm (4.8 eV) laser radiation. The process is shown to be completely non-thermal in nature. In contrast, irradiation with 514 nm radiation is found to be identical to resistively heating the crystal. Adsorption does not quench the gas phase UV absorption-decomposition process, nor does it open up new excitation mechanisms that allow decomposition to occur in the visible region of the spectrum.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1986
Accession Number
ADA169641

Entities

People

  • C. E. Bartosch
  • N. S. Gluck
  • W Ho
  • Z. Ying

Organizations

  • Cornell Laboratory of Atomic and Solid State Physics

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Band Gaps
  • Charge Transfer
  • Chemical Reactions
  • Conduction (Heat Transfer)
  • Decomposition
  • Desorption
  • Dielectric Gases
  • Energy Bands
  • Heat Transfer
  • Heat Transfer Coefficients
  • Materials
  • Materials Science
  • New York
  • Radiation
  • Solid State Physics
  • Thermal Conductivity

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Pulsed Power and Plasma Physics.
  • Thin Film Deposition Science.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Microelectronics
  • Microelectronics - Graphene