Investigations On Undoped Zinc Oxide Nanomaterials As Humidity And Gas Sensor

In this paper we have reported investigations on humidity sensing and liquefied petroleum gas sensing studies of undoped ZnO (or pure ZnO) pellets. Samples of undoped ZnO were analyzed for humidity sensing studies and the material showed good humidity sensing results. It had also been noticed that the pellet samples with different thicknesses showed different sensitivity values for humidity sensing studies. Pellet samples of undoped ZnO (or pure ZnO) nanomaterial showed the best results with sensitivity of 296 (%) in the 500-5000 ppm range for liquefied petroleum gas sensing. The sensing elements developed from undoped ZnO nanomaterials showed low hysteresis, low aging effects and better sensitivity values

Keywords

Humidity; Gas; Pellets; Sensing Elements, Sensitivity

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