Infrared spectroscopy of C-D vibrational modes on diamond (100) surfaces

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Ley L, Ristein J
Zeitschrift: Surface Science
Verlag: Elsevier
Jahr der Veröffentlichung: 1999
Band: 427-428
Seitenbereich: 245
ISSN: 0039-6028


Abstract

A high resolution analysis of C-D vibrational modes on single crystal diamond using Fourier transform infrared spectroscopy is reported. This method has the advantage over high resolution electron energy loss spectroscopy of a far superior resolution (< 1 cm-1 versus approx. 10 cm-1). The inherently low surface sensitivity of the former method was overcome by measuring the IR absorption in the attenuated total reflection mode employing a Ge prism. The use of deuterium instead of hydrogen avoids the interference from airborne hydrocarbon contamination. We present data on the diamond (100) surface that was deuterated in a microwave plasma and subjected to a series of isothermal annealing treatments at 700°C. The C-D stretching mode at 2181 cm-1) and the bending mode at 1054 cm-1 could be followed down to a tenth of a monolayer coverage. From the intensity ratio of these bands measured in s- and p-polarization the essentially perpendicular disposition of the C-D bonds has been inferred.


FAU-Autoren / FAU-Herausgeber

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

Zuletzt aktualisiert 2018-09-08 um 05:38