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Open Access research with a European policy impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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Weak adsorption of ethylene on GaAs(100)

Chen, Y and Schmidt, J and Siller, L and Barnard, J C and Palmer, R E and Chen, Yu (1998) Weak adsorption of ethylene on GaAs(100). Physical Review B, 58 (3). pp. 1177-1180. ISSN 1098-0121

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Abstract

Hydrocarbon molecules are an important source of carbon contamination in semiconductor growth processes. We have investigated the adsorption of ethylene, C2H4, on the As-terminated GaAs(100)surface at 100 K in ultrahigh vacuum with high-resolution electron-energy-loss spectroscopy. We find that the ethylene molecules are predominantly adsorbed weakly (physisorbed) on the surface with the C=C double bond parallel to the As surface dimers. This behavior differs significantly from the adsorption of C2H4 on Si(100), as predicted by recent theoretical calculation. When the surface temperature is increased from 100 to 300 K, some of the physisorbed C2H4 molecules convert to chemisorbed species. [S0163-1829(98)02127-4].