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SEM images of PVA∕ZnO hybrid fibers with average diameter about . (scale ).
IR spectra of PVA (a) and PVA∕ZnO (b) hybrid fibers. The arrow indicated the vibration band of Zn–O.
Resonant Raman spectra of PVA∕ZnO hybrid fibers at room temperature using line of a He–Cd laser as the excitation source. This band, centered at , was attributed to the Raman -LO phonon scattering of ZnO.
DSC curves of PVA (a) and PVA∕ZnO (b) fibers, showing that PVA was stabilized by ZnO until heating to .
PL spectra of ZnO QDs (a), PVA fibers (b), PVA∕ZnO spin cast film (c) and PVA∕ZnO hybrid fibers (d) at room temperature using the line of a He–Cd laser as the excitation source. Insert is the luminescence photograph of the PVA∕ZnO hybrid fibers taken by using UV filter and charge coupled device camera (color online).
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