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Published on: December 2, 2013
Self-assembled monolayer functionalized NiO nanowires: strategy to enhance the sensing performance of p-type metal
Navpreet Kaur1, Mandeep Singh1,2, Andrea Casotto3,4
1SENSOR Laboratory, University of Brescia and INSTM UdR Brescia, Via D. Valotti 9, Brescia 25133, Italy. n.kaur001@unibs.it.
Abstract:
A novel strategy for the improvement in the sensing performance of p-type NiO is developed by employing the unique functional properties of self-assembled monolayers. Specifically, hole concentration near the surface of NiO nanowires (NWs) is modulated by terminal epoxy groups of the organosilane. This modulation leads to the increase in electron transfer from reducing gases to NWs surface. As a result, SAM-functionalized sensors showed 9-times higher response at low-temperature as compared to bare NiO NWs.
