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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 | Source: | 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 | Document URI: | http://hdl.handle.net/1942/4169 | ISSN: | 0031-8965 | e-ISSN: | 1862-6319 | DOI: | 10.1002/pssa.200776326 | ISI #: | 000249648700015 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2008 |
Appears in Collections: | Research publications |
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