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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/3233

Title: On μτ product measurements in CVD diamond
Authors: NESLADEK, Milos
STALS, Lambert
Marshall, JM
Bayley, P.
Issue Date: 1998
Citation: DIAMOND AND RELATED MATERIALS, 7(7). p. 981-985
Abstract: Energy-resolved steady-state and transient photocurrent measurements are investigated with the aim to evaluate the density of states (DOS) in CVD diamond films. The steady-state photocurrent spectra reflect the photoexcitation of carriers from two dominant defect structures in CVD diamond films which we denote as D1 and D2 levels [photoexcitation onsets at about 1.0 eV (D1) and at 2.1 eV (D2)]. The comparison of the photocurrent spectra with Ib diamond allows us to attribute the D2 level to the substitutional nitrogen. The D1 level remains unidentified. The mu*tau product increases for samples showing dominantly the D1 level photoexcitation. The transient photocurrent spectra obtained after laser pulse illumination in sandwich and coplanar configurations indicate an intense interaction of excess photo-carriers with a broad distribution of the DOS. (C) 1998 Elsevier Science S.A.
Notes: Limburgs Univ Ctr, Inst Mat Res, Div Mat Phys, B-3590 Diepenbeek, Belgium. Univ Wales, Dept Mat Engn, Ctr Elect Mat, Swansea SA2 8PP, W Glam, Wales.Nesladek, M, Limburgs Univ Ctr, Inst Mat Res, Div Mat Phys, Univ Campus,Wetenschapspk 1, B-3590 Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/3233
DOI: 10.1016/S0925-9635(97)00339-7
ISI #: 000074651300008
ISSN: 0925-9635
Type: Journal Contribution
Validation: ecoom, 1999
Appears in Collections: Research publications

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