Jw. Liu et al., Investigations of Fuch-Kliewer phonons and hydrogen adsorption of 6H-SiC surfaces by high-resolution electron-energy-loss spectroscopy, THIN SOL FI, 375(1-2), 2000, pp. 77-81
In this contribution, the optical Fuchs-Kliewer (FK) surface phonon and hyd
rogen adsorption of 6H-SiC surfaces were investigated with high-resolution
electron-energy-loss spectroscopy (HREELS). The different HREEL spectra of
the FK surface phonons were obtained from clean (0001) Si- and (0001) C-ter
minated surfaces. It was noticed that the full width at half maximum of ela
stic peaks for the reconstructed surfaces was smaller than that of unrecons
tructed surfaces for both (0001) Si- and (0001) C-terminated 6H-SiC. Under
decomposing ammonia by hot filament at 1700 degreesC, only the adsorption o
f hydrogen atoms on the surfaces for both Si- and C-terminated 6H-SiC was d
etected in the experiment. (C) 2000 Elsevier Science S.A. All rights reserv
ed.