Investigation of hydrogenated CVD diamond films by photo-thermal ionization spectroscopy

被引：2

作者：

Hikavyy, A. ^{[1
]}

Clauws, P.

Deferme, W.

Bogdan, G.

Haenen, K.

Nesladek, M.

机构：

[1] Univ Ghent, Krijgslann 281, B-9000 Ghent, Belgium

[2] Limburg Univ Centrum, Inst Mat Res, Limburg, Belgium

[3] IMEC, Div IMOMEC, B-3590 Diepenbeek, Belgium

来源：

关键词：

diamond; hydrogenation; shallow impurities; photocurrent measurements;

D O I：

10.1016/j.diamond.2005.11.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. (c) 2005 Elsevier B.V All rights reserved.

引用

页码：682 / 686

页数：5