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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/4169

Title: pH sensitivity of nanocrystalline diamond films
Authors: CHRISTIAENS, Pieter
Abouzar, Maryam H.
Poghossian, A.
Wagner, T.
BIJNENS, Nathalie
WILLIAMS, Oliver
DAENEN, Michael
HAENEN, Ken
DOUHERET, Olivier
D'HAEN, Jan
Mekhalif, Z.
Schoening, M. J.
WAGNER, Patrick
Issue Date: 2007
Publisher: WILEY-V C H VERLAG GMBH
Citation: PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 204(9). p. 2925-2930
Abstract: The pH-sensitive properties of hydrogen- and oxygen-terminated nanocrystalline diamond (NCD) films have been investigated using a field-effect-based capacitive electrolyte-diamond-insulator-semiconductor (EDIS) structure as transducer. The NCD thin films (100-500 nm) were grown on p-Si-SiO2 Substrates by microwave plasma-enhanced chemical vapour deposition. The electrochemical characterisation of EDIS sensors with NCD films of different thicknesses has been performed in buffer solutions of pH 3 to pH 11 by means of capacitance-voltage and constant-capacitance methods. The developed EDIS sensors with O-terminated NCD surfaces show an average pH-sensitivity of 38 mV/pH A slightly smaller pH-sensitivity of 29-36 mV/pH was observed for the EDIS structure with H-terminated NCD surfaces. (C) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Notes: Hasselt Univ, Mat Res Inst, B-3590 Diepenbeek, Belgium. IMEC vzw, Div IMOMEC, B-3590 Diepenbeek, Belgium. Aachen Univ Appl Sci, Inat Nao & Biotechnol IBN 2, D-52428 Julich, Germany. Res Ctr Julich GmbH, Inst Bio & Nanosyst, D-52425 Julich, Germany. Fac Univ Notre Dame Paix, Lab Chem & Electrochem Surfaces, B-5000 Namur, Belgium.WAGNER, P, Hasselt Univ, Mat Res Inst, Wetenschapspk 1, B-3590 Diepenbeek, Belgium.Patrick.WAGNER@uhasselt.be
URI: http://hdl.handle.net/1942/4169
DOI: 10.1002/pssa.200776326
ISI #: 000249648700015
ISSN: 0031-8965
Category: A1
Type: Journal Contribution
Validation: ecoom, 2008
Appears in Collections: Research publications

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