%0 Journal Article
%A Buniatyan, V.V.
%A Abouzar, M. H.
%A Martirosyan, N.W.
%A Schubert, J.
%A Gevorgian, S.
%A Schöning, M. J.
%A Poghossian, A.
%T pH-sensitive properties of barium strontium titanate (BST) thin films prepared by pulsed laser deposition technique
%J Physica status solidi / A
%V 207
%@ 0031-8965
%C Weinheim
%I Wiley-VCH
%M PreJuSER-9630
%P 824 - 830
%D 2010
%Z Record converted from VDB: 12.11.2012
%X 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
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000277565300009
%R 10.1002/pssa.200983310
%U https://juser.fz-juelich.de/record/9630