F. Güell, J.O. Ossó, A.R. Goñi, A. Cornet, J.R. Morante
a b s t r a c tSingle crystal ZnO nanowires with lengths and diameters ranging from 2 to 30 µm and 100 to 300 nm, respectively, have been grown by the vapor transport method on SiO 2 /Si substrates using Au as catalyst. Their Raman and emission properties under different excitation wavelengths have been studied at the nanoscale. Whereas Raman measurements on nanowires corroborate the well-known ZnO phonon characteristics, their photoluminescence spectra exhibit a very broad emission band, mainly in the visibl…
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