Journal Article

PreJuSER-9630

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png pH-sensitive properties of barium strontium titanate (BST) thin films prepared by pulsed laser deposition technique

Buniatyan, V. V. ; Abouzar, M. H.FZJ* ; Martirosyan, N. W. ; Schubert, J.FZJ* ; Gevorgian, S. ; Schöning, M. J.FZJ* ; Poghossian, A.FZJ*

2010
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/pssa.200983310

Abstract: pH sensitive properties of barium strontium titianate (BST) high k thin films as alternative gate material for field-effect capacitive (bio-) chemical sensors based on an electrolyte-insulator semiconductor system have been investigated. The BST films of different composition (Ba0.3Sr0.69TiO3, Ba0.25Sr0.75TiO3 and MG doped Ba0.8Sr0.2Mg0.1Ti0.9O3 were deposited by pulsed laser deposition technique from targets farbicated by self-propagating high-temperatures synthesis. The realised sensors have been electrochemically characterised by means of impedance-spectroscopy, capacitance-voltage and constant-capacitance method. The sensors possess a Nernstian-like pH sensitivity in the concentration range between pH 3 and 11 with a response time of 5-10 s. An equivalent circuit model for the BST-based capacitive field-effect sensor is discussed.(C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Keyword(s): J ; barium strontium titanate (auto) ; PLD (auto) ; biosensor (auto) ; field effect sensor (auto)

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Bioelektronik (IBN-2)
2. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)
3. Halbleiter-Nanoelektronik (IBN-1)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2010

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