Electron affinity of the bare and hydrogen covered single crystal diamond (111) surface

Journal article


Publication Details

Author(s): Ristein J, Ley L
Journal: Physical Review Letters
Publisher: American Physical Society
Publication year: 1998
Volume: 81
Journal issue: 2
Pages range: 429-432
ISSN: 0031-9007


Abstract


The electron affinity chi and the band diagram of single crystal diamond (111) surfaces was determined as a function of hydrogen coverage by combining work function measurements with photoelectron yield and core level photoemission spectroscopy. chi ranges from -1.27 eV for the fully hydrogen covered (1 X 1) surface to +0.38 eV for the hydrogen free (2 X 1) reconstructed surface. This change is quantitatively explained by a surface dipole model provided a coverage dependent depolarization is included. The dipole moment of the C-H bond on diamond (111) is found to be 0.09 e Angstrom.



FAU Authors / FAU Editors

Ley, Lothar Prof. Dr.
Naturwissenschaftliche Fakultät
Ristein, Jürgen apl. Prof. Dr.
Lehrstuhl für Laserphysik

Last updated on 2018-09-08 at 05:23