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Electronically conductive perovskite-based oxide nanoparticles and films for optical sensing applications
Electronically conductive perovskite-based oxide nanoparticles and films for optical sensing applications
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机译:导电钙钛矿基氧化物纳米颗粒和薄膜,用于光学传感应用
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摘要
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 0.8x1.2, 0.8y1.2. Exemplary electronically conducting perovskite-based oxides include but are not limited to La1-xSrxCoO3, La1-xSrxMnO3, LaCrO3, LaNiO3, La1-xSrxMn1-yCryO3, SrFeO3, SrVO3, La-doped SrTiO3, Nb-doped SrTiO3, and SrTiO3-δ.
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机译:本发明涉及一种通过使电导的钙钛矿基金属氧化物材料与被监测的流接触,用入射光照射电导的钙钛矿基金属氧化物,收集出射光,监测光学方法来检测化学成分变化的方法。根据入射光和出射光的比较,检测光信号的变化。电子导电的钙钛矿基金属氧化物具有钙钛矿基的晶体结构和至少10 -1 Sup> S / cm的电子电导率,其中参数在气流温度下指定。基于钙钛矿的电子导电金属氧化物具有经验式A x Sub> B y Sub> O 3-δ Sub>,其中A至少是第一元素在A位上,B至少是B位上的第二元素,并且其中0.8 <x <1.2,0.8 <y <1.2。示例性的导电钙钛矿基氧化物包括但不限于La 1-x Sub> Sr x Sub> CoO 3 Sub>,La 1-x Sub> Sr x Sub> MnO 3 Sub>,LaCrO 3 Sub>,LaNiO 3 Sub>,La 1-x Sub> Sr x Sub> Mn 1-y Sub> Cr y Sub> O 3 Sub>,SrFeO 3 Sub>,SrVO 3 Sub>,La掺杂SrTiO 3 Sub>,Nb掺杂SrTiO 3 Sub>和SrTiO 3-δ Sub >。
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