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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/2893

Title: The electronic structure of phosphorus in n-type CVD diamond films: Revised
Authors: HAENEN, Ken
MEYKENS, Kristien
NESLADEK, Milos
KNUYT, Gilbert
STALS, Lambert
Teraji, T
Koizumi, S
Issue Date: 2000
Publisher: WILEY-V C H VERLAG GMBH
Citation: PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 181(1). p. 11-16
Abstract: In this paper we apply the quasi-steady-state photocurrent (PC) technique and photothermal ionisation spectroscopy (PTIS) at various low temperatures to study n-type P-doped CVD diamond samples, prepared under different doping conditions. The low temperature photocurrent spectra for 500 ppm P-doped films show phonon-assisted oscillatory photoconductivity with more and sharper minima than for the 1000 ppm sample. The 500 ppm PH3/CH4 doped samples exhibit at this moment also the highest reported Hall mobility at RT of 240 cm(2) V-1 s(-1), pointing to a better film quality with less stress, resulting in less broadening of the defect levels in the band gap. Minima in the photocurrent signal that are separated by 155 meV can be grouped. This energy corresponds to the LO phonon at the conduction band minimum, located along the Delta-axes of the diamond band structure in the [100] direction. It is created when an electron thermalises out of the conduction band into an excited level.
Notes: Limburgs Univ Ctr, Mat Res Inst, Div Mat Phys, B-3590 Diepenbeek, Belgium. Natl Inst Res Inorgan Mat, Ctr Adv Mat Res, Tsukuba, Ibaraki 305, Japan.Haenen, K, Limburgs Univ Ctr, Mat Res Inst, Div Mat Phys, Wetenschapspk 1, B-3590 Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/2893
DOI: 10.1002/1521-396X(200009)181:1<11::AID-PSSA11>3.0.CO;2-W
ISI #: 000089827900007
ISSN: 0031-8965
Category: A1
Type: Journal Contribution
Validation: ecoom, 2001
Appears in Collections: Research publications

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