Electronically conductive perovskite-based oxide nanoparticles and films for optical sensing applications
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United States of America Patent
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Apr 28, 2015
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Jul 18, 2014
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Jun 27, 2012
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Abstract
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 10−1 S/cm, where parameters are specified at the gas stream temperature. The electronically conducting perovskite-based metal oxide has an empirical formula AxByO3-δ, 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
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