| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 703348 | Diamond and Related Materials | 2006 | 5 Pages |
Abstract
Different hydrogenated CVD diamond films as well as bulk IIb and IIa diamonds were investigated by means of photo-thermal ionization spectroscopy. All samples show a new photocurrent signal at temperatures lower than 120–20 K depending on the sample with a threshold around 100 meV what suggests a presence of shallow levels on the hydrogenated diamond surface. The photocurrent spectrum due to these shallow levels consists of features similar to the two-phonon absorption in diamond. Influence of annealing in air on the photocurrent behavior was investigated as well.
Related Topics
Physical Sciences and Engineering
Engineering
Electrical and Electronic Engineering
Authors
A. Hikavyy, P. Clauws, W. Deferme, G. Bogdan, K. Haenen, M. Nesladek,