Characterization and Modeling of a Pt-In₂O₃ Resistive Sensor for Hydrogen Detection at Room Temperature.

ABSTRACT: Sensitive H₂ sensors at low concentrations and room temperature are desired for the early warning and control of hydrogen leakage. In this paper, a resistive sensor based on Pt-doped In₂O₃ nanoparticles was fabricated using inkjet printing process. The H₂ sensing performance of the sensor was evaluated at low concentrations below 1% at room temperature. It exhibited a relative high response of 42.34% to 0.6% H₂. As the relative humidity of 0.5% H₂ decreased from 34% to 23%, the response decreased slightly from 34% to 23%. The sensing principle and the humidity effect were discussed. A dynamic current sensing model for dry H₂ detection was proposed based on Wolkenstein theory and experimentally verified to be able

SUBMITTER: Wu M 

PROVIDER: S-EPMC9573015 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature