Article ID Journal Published Year Pages File Type
7117835 Materials Science in Semiconductor Processing 2018 6 Pages PDF
Abstract
A sensitive resistive-type gas sensor based on porous silicon (PS)/Pd-loaded WO3 nanowires (NWs) was successfully synthesized via facile methods for detection of ammonia at room temperature. PS/WO3 NWs was synthesized by thermal evaporating W powder on the PS substrate, and Pd nanoparticles were decorated on the surface of WO3 NWs by in-situ reduction method. Compared with PS/WO3 NWs and Pd-loaded WO3 NWs, the PS/Pd-loaded WO3 NWs showed an enhanced response to ammonia at a low concentration down to 1 ppm and exhibited good selectivity, short response-recovery time at room temperature. The improved sensing characteristics indicated that the decoration of Pd NPs is effective for enhancing gas sensing performance.
Related Topics
Physical Sciences and Engineering Engineering Electrical and Electronic Engineering
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