TY  - JOUR
AU  - Buniatyan, V.V.
AU  - Abouzar, M. H.
AU  - Martirosyan, N.W.
AU  - Schubert, J.
AU  - Gevorgian, S.
AU  - Schöning, M. J.
AU  - Poghossian, A.
TI  - pH-sensitive properties of barium strontium titanate (BST) thin films prepared by pulsed laser deposition technique
JO  - Physica status solidi / A
VL  - 207
SN  - 0031-8965
CY  - Weinheim
PB  - Wiley-VCH
M1  - PreJuSER-9630
SP  - 824 - 830
PY  - 2010
N1  - Record converted from VDB: 12.11.2012
AB  - 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
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000277565300009
DO  - DOI:10.1002/pssa.200983310
UR  - https://juser.fz-juelich.de/record/9630
ER  -