Skip to main content
. Author manuscript; available in PMC: 2015 Nov 1.
Published in final edited form as: Mikrochim Acta. 2014 Apr 1;181(15-16):1759–1780. doi: 10.1007/s00604-014-1255-0

Figure 15.

Figure 15

Electron transport mechanisms for the (a) plain SiO2 NWs and (b) Au-NPs@SiO2 NWs under dark and illuminating conditions, respectively. Surface defects control the conductivity of the plain SiO2 NWs with no photoresponse due to the wide band gap. The conductivity of the Au-NP@SiO2 NWs is controlled by both the surface states and carriers contributed by the Au NPs. Under 532-nm excitation, SP absorption creates excess carriers that contribute to the higher conductivity [115].