Beilstein J. Nanotechnol.2012,3, 353–359, doi:10.3762/bjnano.3.41
normally exposed to an oxygen atmosphere to achieve high performance in UV photodetection. In this work we present results on a UV photodetector fabricated using a flexible ZnO nanowire sheet embedded in polydimethylsiloxane (PDMS), a gas-permeablepolymer, showing reproducible UV photoresponse and
photoresponse.
Keywords: permeablepolymer; photoresponse; polydimethylsiloxane; UV photodetection; 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
also dependent on the gas pressure, i.e., oxygen concentration: The lower the pressure the slower the UV photoresponse speed [4]. A number of silicone and polysulphone polymers have been studied for gas separation membranes [25][26]. Hence, we speculate that ZnO nanowires embedded in a gas-permeable
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Figure 1:
(a) An optical photograph of a strap-shaped ZnO nanowire film; (b) SEM image of the nanowire film; ...