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15 October 2012 Surface-plasmon-mediated emission from glancing-angle-deposition-functionalized ZnO nanowires
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Vertically oriented ZnO nanowires (NWs) are grown upon silicon substrates using a novel, modified vapor-solid method. Electron-beam evaporation is then used to functionalize the sides of the ZnO NWs with MgO:Ag via glancing angle deposition (GLAD). By varying the thickness of the deposited MgO insulating layer, it is possible to study the underlying energetic mechanisms responsible for the quenching and enhancement of ZnO photoluminescence centers. For the visible emission, strong quenching was observed to occur independently of the MgO thickness. In contrast, the band-edge emission displayed an enhancement factor of 19 as the thickness of the MgO spacer was increased.
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Daniel C. Mayo, Anthony T. Mayo, Akira Ueda, Zhengda Pan, H. Y. Xu, Y. C. Liu, and Richard R. Mu "Surface-plasmon-mediated emission from glancing-angle-deposition-functionalized ZnO nanowires", Proc. SPIE 8456, Nanophotonic Materials IX, 84560J (15 October 2012);

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