Beilstein J. Nanotechnol.2012,3, 353–359, doi:10.3762/bjnano.3.41
normally exposed to an oxygen atmosphere to achieve high performance in UVphotodetection. In this work we present results on a UV photodetector fabricated using a flexible ZnO nanowire sheet embedded in polydimethylsiloxane (PDMS), a gas-permeable polymer, showing reproducible UV photoresponse and
photoresponse.
Keywords: permeable polymer; photoresponse; polydimethylsiloxane; UVphotodetection; ZnO nanowires; Introduction
ZnO is a direct wide band gap semiconductor with a 3.37 eV gap and a high exciton binding energy of 60 meV at room temperature, which is promising for optoelectronic applications
for UVphotodetection, to avoid the need to use a gas cavity to load the nanowires, simplifying the device fabrication.
Recent experiments have demonstrated that coating ZnO nanobelts with UV-sensitive polymers enhances the UV photoconduction [13][14]. A thin layer (<100 nm) of such a polymer over ZnO
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Figure 1:
(a) An optical photograph of a strap-shaped ZnO nanowire film; (b) SEM image of the nanowire film; ...