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Nanocrystalline ruthenium oxide and ruthenium in sensing applications - an experimental and theoretical study

Salomonsson, Anette; Petoral, Rodrigo M; Uvdal, Kajsa; Aulin, Christian; Kall, Per-Olov; Ojamae, Lars; Strand, Michael; Sanati, Mehri LU and Lloyd Spetz, Anita (2006) In Journal of Nanoparticle Research 8(6). p.899-910
Abstract
In this project, we have explored RuO2 and Ru nanoparticles (∼ ∼10 and ∼ ∼5 nm, respectively, estimated from XRD data) to be used as gate material in field effect sensor devices. The particles were synthesized by wet chemical procedure. The capacitance versus voltage characteristics of the studied capacitance shifts to a lower voltage while exposed to reducing gases. The main objectives are to improve the selectivity of the FET sensors by tailoring the dimension and surface chemistry of the nanoparticles and to improve the high temperature stability. The sensors were characterized using capacitance versus voltage measurements, at different frequencies, 500 Hz to 1 MHz, and temperatures at 100–400°C. The sensor response patterns have been... (More)
In this project, we have explored RuO2 and Ru nanoparticles (∼ ∼10 and ∼ ∼5 nm, respectively, estimated from XRD data) to be used as gate material in field effect sensor devices. The particles were synthesized by wet chemical procedure. The capacitance versus voltage characteristics of the studied capacitance shifts to a lower voltage while exposed to reducing gases. The main objectives are to improve the selectivity of the FET sensors by tailoring the dimension and surface chemistry of the nanoparticles and to improve the high temperature stability. The sensors were characterized using capacitance versus voltage measurements, at different frequencies, 500 Hz to 1 MHz, and temperatures at 100–400°C. The sensor response patterns have been found to depend on operating temperature. X-ray photoelectron spectroscopy (XPS) analyses were performed to investigate the oxidation state due to gas exposure. Quantum-chemical computations suggest that heterolytic dissociative adsorption is favored and preliminary computations regarding water formation from adsorbed hydrogen and oxygen was also performed. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
nanoparticles, gas sensors, RuO2, Ru, FET devices
in
Journal of Nanoparticle Research
volume
8
issue
6
pages
899 - 910
publisher
Springer
external identifiers
  • Scopus:33751536679
ISSN
1572-896X
DOI
10.1007/s11051-005-9058-1
language
English
LU publication?
yes
id
0b246420-3790-4123-aed8-2a1f46ced14a (old id 644565)
date added to LUP
2009-03-18 11:54:15
date last changed
2016-11-18 13:22:34
@misc{0b246420-3790-4123-aed8-2a1f46ced14a,
  abstract     = {In this project, we have explored RuO2 and Ru nanoparticles (∼ ∼10 and ∼ ∼5 nm, respectively, estimated from XRD data) to be used as gate material in field effect sensor devices. The particles were synthesized by wet chemical procedure. The capacitance versus voltage characteristics of the studied capacitance shifts to a lower voltage while exposed to reducing gases. The main objectives are to improve the selectivity of the FET sensors by tailoring the dimension and surface chemistry of the nanoparticles and to improve the high temperature stability. The sensors were characterized using capacitance versus voltage measurements, at different frequencies, 500 Hz to 1 MHz, and temperatures at 100–400°C. The sensor response patterns have been found to depend on operating temperature. X-ray photoelectron spectroscopy (XPS) analyses were performed to investigate the oxidation state due to gas exposure. Quantum-chemical computations suggest that heterolytic dissociative adsorption is favored and preliminary computations regarding water formation from adsorbed hydrogen and oxygen was also performed.},
  author       = {Salomonsson, Anette and Petoral, Rodrigo M and Uvdal, Kajsa and Aulin, Christian and Kall, Per-Olov and Ojamae, Lars and Strand, Michael and Sanati, Mehri and Lloyd Spetz, Anita},
  issn         = {1572-896X},
  keyword      = {nanoparticles,gas sensors,RuO2,Ru,FET devices},
  language     = {eng},
  number       = {6},
  pages        = {899--910},
  publisher    = {ARRAY(0xbe752e0)},
  series       = {Journal of Nanoparticle Research},
  title        = {Nanocrystalline ruthenium oxide and ruthenium in sensing applications - an experimental and theoretical study},
  url          = {http://dx.doi.org/10.1007/s11051-005-9058-1},
  volume       = {8},
  year         = {2006},
}