Continuous-time photoelectron spectroscopy for monitoring monochromatic soft x-ray photodissociation of CF{sub 3}Cl adsorbed on Si(111)-7x7

Journal Article · Mon Oct 01 00:00:00 EDT 2007 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2794430· OSTI ID:21013681

Chou, L -C; Chuang, W -M; Tsai, W -C; Wang, S -K; Wu, Y -H; Wen, C -R ^[1]

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1. Department of Physics, National Cheng Kung University, Tainan, Taiwan (China)

The continuous-time photoelectron spectroscopy was proposed to study the monochromatic soft x-ray photodissociation of CF{sub 3}Cl molecules adsorbed on Si(111)-7x7. Evolution of adsorbed CF{sub 3}Cl was monitored at two photon energies of 240 and 730 eV to deduce the photolysis cross section as a function of energy. Dissociation of adsorbed CF{sub 3}Cl by 240/730 eV photons is attributed to the C-Cl/C-F bond scission following the excitation of Cl(2p)/F(1s) core electron. Observation of time-dependent photodissociation also demonstrates the capability for 'real-time' monitoring of the variations of electronic structure and chemical bonding of adsorbate in bond-selective photochemistry.

• OSTI ID: 21013681
• Journal Information: Applied Physics Letters, Vol. 91, Issue 14; Other Information: DOI: 10.1063/1.2794430; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ADSORPTION
CARBON FLUORIDES
CHEMICAL BONDS
CROSS SECTIONS
DISSOCIATION
ELECTRONIC STRUCTURE
ELECTRONS
ENERGY DEPENDENCE
EV RANGE 100-1000
EVOLUTION
EXCITATION
LAYERS
MONOCHROMATIC RADIATION
PHOTOCHEMISTRY
PHOTOELECTRON SPECTROSCOPY
PHOTOLYSIS
PHOTONS
SOFT X RADIATION
TIME DEPENDENCE