Chemisorptive Luminescence: Oxygen on Si(111) Surfaces
- 1 April 1971
- journal article
- conference paper
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 54 (7) , 2771-2776
- https://doi.org/10.1063/1.1675255
Abstract
Chemisorptive luminescence, very similar to that seen by McCarroll [J. Chem. Phys. 50, 4758 (1969)] for oxygen on polycrystalline W, has been observed for oxygen on Si(111) surfaces. It is a diffuse gas‐phase emission extending 2–3 cm above the crystal surface; the spectrum appears continuous, in low resolution, throughout the visible. About 1 in 107 O2 adsorptions produces a photon; no emission is seen during chemisorption of NO, NO2, CO, CO2, and N2. The luminescence decays with hyperbolic kinetics; a model is proposed relating the hyperbolic dependence to the logarithmic rate of surface oxide growth.Keywords
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