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Nanoparticles for long-term stable, more selective MISiCFET gas sensors

Salomonsson, A; Roy, S; Aulin, C; Cerda, J; Kall, PO; Ojamae, L; Strand, M; Sanati, Mehri LU and Spetz, AL (2005) In Sensors and Actuators, B: Chemical 107(2). p.831-838
Abstract
Synthesis of metal-oxide nanoparticles and utilization of these particles as gate materials for field-effect sensor devices is reported. Improved selectivity to specific gases is expected by modulating the size of the oxide nanoparticles or impregnating them with catalytic metals. Another objective is to improve the long-term thermal stability of the sensors, since the metal loaded nanoparticles may prevent thermally induced restructuring of the gate layer, which is often a problematic issue for the catalytic metal layers. Because of its reasonably high electrical conductivity, which is especially important for the capacitive gas sensors, ruthenium dioxide has been identified to be one of the potential candidates as gate material for the... (More)
Synthesis of metal-oxide nanoparticles and utilization of these particles as gate materials for field-effect sensor devices is reported. Improved selectivity to specific gases is expected by modulating the size of the oxide nanoparticles or impregnating them with catalytic metals. Another objective is to improve the long-term thermal stability of the sensors, since the metal loaded nanoparticles may prevent thermally induced restructuring of the gate layer, which is often a problematic issue for the catalytic metal layers. Because of its reasonably high electrical conductivity, which is especially important for the capacitive gas sensors, ruthenium dioxide has been identified to be one of the potential candidates as gate material for the field-effect sensor devices. Interestingly, this material has been found to change its resistivity in different gaseous ambients. When used as a gate material, sensitivity to reducing gases has been observed for the RuO2/SiO2/4H-SiC capacitors. Changes in the resistivity of the films due to various gas exposures have also been recorded. Morphological studies of nanoparticles (SiO2 and Al2O3), loaded or impregnated with catalytic metals (e.g. Pt), have been performed. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Sensors, Catalytic material, MISiCFET, Rutherium dioxide
in
Sensors and Actuators, B: Chemical
volume
107
issue
2
pages
831 - 838
publisher
Elsevier
external identifiers
  • Scopus:18544362636
ISSN
0925-4005
DOI
10.1016/j.snb.2004.12.024
language
English
LU publication?
yes
id
84ea3970-2b8e-474b-ac30-1c278b773a28 (old id 644620)
date added to LUP
2009-03-18 13:02:30
date last changed
2017-01-01 08:08:06
@article{84ea3970-2b8e-474b-ac30-1c278b773a28,
  abstract     = {Synthesis of metal-oxide nanoparticles and utilization of these particles as gate materials for field-effect sensor devices is reported. Improved selectivity to specific gases is expected by modulating the size of the oxide nanoparticles or impregnating them with catalytic metals. Another objective is to improve the long-term thermal stability of the sensors, since the metal loaded nanoparticles may prevent thermally induced restructuring of the gate layer, which is often a problematic issue for the catalytic metal layers. Because of its reasonably high electrical conductivity, which is especially important for the capacitive gas sensors, ruthenium dioxide has been identified to be one of the potential candidates as gate material for the field-effect sensor devices. Interestingly, this material has been found to change its resistivity in different gaseous ambients. When used as a gate material, sensitivity to reducing gases has been observed for the RuO2/SiO2/4H-SiC capacitors. Changes in the resistivity of the films due to various gas exposures have also been recorded. Morphological studies of nanoparticles (SiO2 and Al2O3), loaded or impregnated with catalytic metals (e.g. Pt), have been performed.},
  author       = {Salomonsson, A and Roy, S and Aulin, C and Cerda, J and Kall, PO and Ojamae, L and Strand, M and Sanati, Mehri and Spetz, AL},
  issn         = {0925-4005},
  keyword      = {Sensors,Catalytic material,MISiCFET,Rutherium dioxide},
  language     = {eng},
  number       = {2},
  pages        = {831--838},
  publisher    = {Elsevier},
  series       = {Sensors and Actuators, B: Chemical},
  title        = {Nanoparticles for long-term stable, more selective MISiCFET gas sensors},
  url          = {http://dx.doi.org/10.1016/j.snb.2004.12.024},
  volume       = {107},
  year         = {2005},
}