Global to push GA events into
skip to main content

Title: Plasmonic transparent conducting metal oxide nanoparticles and films for optical sensing applications

The disclosure relates to a method of detecting a change in a chemical composition by contacting a doped oxide material with a monitored stream, illuminating the doped oxide material with incident light, collecting exiting light, monitoring an optical signal based on a comparison of the incident light and the exiting light, and detecting a shift in the optical signal. The doped metal oxide has a carrier concentration of at least 10.sup.18/cm.sup.3, a bandgap of at least 2 eV, and an electronic conductivity of at least 10.sup.1 S/cm, where parameters are specified at a temperature of C. The optical response of the doped oxide materials results from the high carrier concentration of the doped metal oxide, and the resulting impact of changing gas atmospheres on that relatively high carrier concentration. These changes in effective carrier densities of conducting metal oxide nanoparticles are postulated to be responsible for the change in measured optical absorption associated with free carriers. Exemplary doped metal oxides include but are not limited to Al-doped ZnO, Sn-doped In.sub.2O.sub.3, Nb-doped TiO.sub.2, and F-doped SnO.sub.2.
; ;
Issue Date:
OSTI Identifier:
U.S. Department of Energy (Washington, DC) NETL
Patent Number(s):
Application Number:
Resource Relation:
Patent File Date: 2013 Jun 26
Research Org:
NETL (National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV (United States))
Sponsoring Org:
Country of Publication:
United States

Works referenced in this record:

Recent advances in optochemical sensors for the detection of H2, O2, O3, CO, CO2 and H2O in air
journal, November 2006

Metal oxides for solid-state gas sensors: What determines our choice?
journal, April 2007

Enhanced optical and electrical gas sensing response of sol–gel based NiO–Au and ZnO–Au nanostructured thin films
journal, March 2012
  • Della Gaspera, Enrico; Guglielmi, Massimo; Martucci, Alessandro
  • Sensors and Actuators B: Chemical, Vol. 164, Issue 1, p. 54-63
  • DOI: 10.1016/j.snb.2012.01.062

Combined effects of small gold particles on the optical gas sensing by transition metal oxide films
journal, April 1997

Investigation on nanocrystalline copper-doped zirconia thin films for optical sensing of carbon monoxide at high temperature
journal, December 2011
  • Remmel, Kurtis; Jiang, Hongmin; Tang, Xiling
  • Sensors and Actuators B: Chemical, Vol. 160, Issue 1, p. 533-541
  • DOI: 10.1016/j.snb.2011.08.022

Plasmonic transparent conducting metal oxide nanoparticles and nanoparticle films for optical sensing applications
journal, July 2013

Solvothermal synthesis and properties control of doped ZnO nanoparticles
journal, January 2009
  • Cimitan, Samanta; Albonetti, Stefania; Forni, Laura
  • Journal of Colloid and Interface Science, Vol. 329, Issue 1, p. 73-80
  • DOI: 10.1016/j.jcis.2008.09.060