Impedancemetric Sensor Using Eu<sub>2</sub>CuO<sub>4</sub> Thick Film for Detection of CO

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Abstract

<p>An impedancemetric thick-film CO sensor using RE2CuO4 (RE = La, Sm, Eu, Gd) oxides was examined for monitoring carbon monoxide. The thick-film sensor using Eu2CuO4 showed a high response to CO. The response was almost linear to CO concentration between 50 and 600 ppm, and the 90% response time to 300-ppm CO was approximately 90 s, although the CO response of the sensor was affected by NO and NO2 at low concentration.</p>

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