Photonic Sensors · 2015 · 25 citations · 24 references
Natural SciencesMaterials EngineeringMaterials ScienceElectrochemistrySensorsThin FilmsCoatingsElectrode MaterialsElectrostatic SprayingGas SensorsThin Film Electrical PropertiesThin-film DepositionConductivityElectrical Conductivity MeasurementsElectrostatic DepositionElectrostatic Spray DepositionMetal Oxide Gas SensorsMetal Oxide Sensor MaterialsN-type ConductivityRecovery Time
A simple, low-cost, and home-built electrostatic spray deposition (ESD) system with the stable cone-jet mode was used to deposit nickel oxide (NiO) thin films on glass substrates kept at temperature of 400 °C as the primary precursor solution of 0.1 M concentration hydrated nickel chloride was dissolved in isopropyl alcohol. Electrical measurements showed that these films were of n-type conductivity while their resistance response to hydrogen flow in air ambient was varied by 2.81% with the rise and recovery time of 48 s and 40 s, respectively.
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