Picture of virus under microscope

Research under the microscope...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

Explore SIPBS research

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

Full text not available in this repository. (Request a copy from the Strathclyde author)

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].