Interaction of metastable molecular oxygen with the dangling bonds of a Si(111)-(7×7) surfaceVisa övriga samt affilieringar
2001 (Engelska)Ingår i: Journal of Electron Spectroscopy and Related Phenomena, ISSN 0368-2048, E-ISSN 1873-2526, Vol. 114-116, s. 489-494Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
We have investigated the interaction between metastable molecular oxygen and the adatom dangling bonds modified by the adsorption of atomic oxygen into the back-bonds of a Si(111)-(7×7) surface. Ultraviolet photoelectron spectroscopy shows that the metastable states increase in intensity faster but with a decrease in its saturated intensity as the coverage of atomic oxygen increases. This result suggests that the number of modified dangling bonds is not the only important factor for the adsorption process of metastable oxygen. Taking into account the observation of modified dangling bonds with different density of states in scanning tunneling microscopy, we conclude that the adsorption of the metastable oxygen species correlates closely with the density of states of the dangling bond.
Ort, förlag, år, upplaga, sidor
2001. Vol. 114-116, s. 489-494
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URN: urn:nbn:se:liu:diva-47462DOI: 10.1016/S0368-2048(00)00248-6OAI: oai:DiVA.org:liu-47462DiVA, id: diva2:268358
2009-10-112009-10-112017-12-13