Abstract
Indium tin oxide (ITO) nanofibers were successfully prepared via an electrospinning method, followed byannealing at 400 °C. Mixed solutions of ITO nanoparticle sol and polyethylene oxide (PEO) were used asprecursors of the nanofibers. The PEO decomposed during annealing to yield ITO fibers.The fibers were characterized by scanning electron microscopy (SEM), x-ray diffraction(XRD), thermo-gravimetric/differential thermal analysis (TG/DTA), UV–visspectrophotometry and four-probe resistivity measurements. The diameter of the preparedfibers was controlled by adjusting the flow rate and the applied electric current.In2O3 crystallized in the ITO nanofibers with a crystallite size of 27 nm. The opticaltransmittance in the visible region approached 90% in films deposited for 5 min, confirmingthat the nanofiber film is still transparent in the optical region. The sheet resistance of thenanofiber film was linearly dependent on the inverse of the deposition time and on thePEO/ITO ratio.
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