Department of Physics and Astronomy: Publications and Other Research


Date of this Version

July 1992


Published in the Journal of Vacuum Science and Technology A 10(4), Jul/Aug 1992. Copyright © 1992 American Vacuum Society. Used by permission. For free online abstracts, see


We compare the valence band photoemission resulting from molecular adsorption of nido-decaborane(14) (B10H14) and nido-2,3-diethyl-2,3-dicarbahexaborane on Si(111) at 100 K. The relative shift of the apparent valence band edge with increasing molecular coverage is consistent with the relative energy difference in the highest occupied molecular orbital for these two molecules as inferred from modified neglect of differential overlap calculations. The results suggest that the screening is very similar, despite the very different molecular structures of these two nido cage molecules.

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