AVS 53rd International Symposium
    Surface Science Tuesday Sessions
       Session SS-TuP

Paper SS-TuP36
Chemicurrent Caused by Adsorption of -C=C -Contained Molecules on Pt Surfaces at Low Temperature

Tuesday, November 14, 2006, 6:00 pm, Room 3rd Floor Lobby

Session: Surface Science Poster Session
Presenter: M. Sushchikh, UC Santa Barbara
Authors: M. Sushchikh, UC Santa Barbara
M.N. Lapushkin, UC Santa Barbara
H. Nienhaus, University of Duisburg-Essen, Germany
D. Auerbach, Hitachi Global Storage Technologies
E.W. McFarland, UC Santa Barbara
Correspondent: Click to Email
A chemicurrent caused by directing beams of C=C -contained molecules (ethylene, propylene) at 100K on evaporated Pt films was measured using Schottky-type metal-semiconductor (MS) devices. Largest chemicurrent was observed for ethylene with overall yield 2*10 5 e/molecule. In the case of propylene the yield was 5*10 6 e/molecule. Increase in the kinetic energies of the impinging molecules (up to 0.5eV for ethylene and up to 0.45eV for propylene) using seeded beam techniques did not affect the chemicurrent overall yield. Beams of large molecules (benzene, propylene oxide, allylbenzene, styrene) did not cause observable chemicurrent.