Abstract
In the present study we report the design & synthesis of a novel p-n type semiconducting Pd incorporated ZnO: SnO (ZSP) nanocomposite as Hydrogen (H2) gas sensor, which demonstrates an efficient conductivity and superior stability through nanostructured engineering. The structural characteristics were investigated by X-ray diffraction (XRD), Particle Size Analyzer (PSA), X-ray Photoelectron Spectroscopy (XPS) and morphology by High Resolution Transmission electron microscopy (HRTEM). Gas sensing characteristics of ZnO: SnO nanocomposite towards 500 ppm hydrogen gas exhibited Sensitivity of S = 0.6 whereas ZnO: SnO: Pd nanocomposite exhibited higher Sensitivity of S = 0.91 at a lower operating temperature of 150 °C. The achieved features make the sample ZSP a potential candidate for development of highly Sensitive and Selective H2 gas sensor.
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