Electronically conductive perovskite-based oxide nanoparticles and films for optical sensing applications

Ohodnicki, Jr., Paul R.; Schultz, Andrew M.

Title: Electronically conductive perovskite-based oxide nanoparticles and films for optical sensing applications

Patent · Tue Apr 28 00:00:00 EDT 2015

OSTI ID:1178665

Ohodnicki, Jr., Paul R.; Schultz, Andrew M.

The disclosure relates to a method of detecting a change in a chemical composition by contacting a electronically conducting perovskite-based metal oxide material with a monitored stream, illuminating the electronically conducting perovskite-based metal oxide 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 electronically conducting perovskite-based metal oxide has a perovskite-based crystal structure and an electronic conductivity of at least 10.sup.-1 S/cm, where parameters are specified at the gas stream temperature. The electronically conducting perovskite-based metal oxide has an empirical formula A.sub.xB.sub.yO.sub.3-.delta., where A is at least a first element at the A-site, B is at least a second element at the B-site, and where 0.8<1.2, 0.8<1.2. Exemplary electronically conducting perovskite-based oxides include but are not limited to La.sub.1-xSr.sub.xCoO.sub.3, La.sub.1-xSr.sub.xMnO.sub.3, LaCrO.sub.3, LaNiO.sub.3, La.sub.1-xSr.sub.xMn.sub.1-yCr.sub.yO.sub.3, SrFeO.sub.3, SrVO.sub.3, La-doped SrTiO.sub.3, Nb-doped SrTiO.sub.3, and SrTiO.sub.3-.delta..

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Research Organization:: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)

Sponsoring Organization:: USDOE

Assignee:: U.S. Department of Energy (Washington, DC)

Patent Number(s):: 9,019,502

Application Number:: 14/335,149

OSTI ID:: 1178665

Resource Relation:: Patent File Date: 2014 Jul 18

Country of Publication:: United States

Language:: English

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