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(a) FE-SEM image of the sample. (b) X-ray diffraction pattern of ZnO nanowires.
PL spectrum of ZnO nanowires measured at , (a) photon energy ranging from . The inset is the near-band edge region in a magnified scale. (b) High resolution high energy shoulder in near-band edge emission.
(Color online) (a) The evolution of PL of ZnO nanowires with temperature. (b) The FX emission intensity vs the inverse temperature.
(Color online) FWHM of the FX emission line of ZnO nanowires as a function of temperature. The solid curve is theoretically fitted by using Eq. (2).
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