Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
In this study, we report a facile synthesis of copper-tungsten-sulfide (Cu2WS4) nanofibers using a polyacrylonitrile (PAN) nanofiber as template via electrospinning technique, for the first time. The structural, compositional, morphological and optical properties of these nanofibers were characterized by X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and ultraviolet-visible (UV�Vis) spectroscopy. XRD and TEM results indicated that the Cu2WS4 nanofibers showed good crystallinity and excellent morphology with an average nanofiber diameter of approximately 350 nm, respectively. However, additional peaks from secondary phases such as Cu-S, W-S and etc., could be observed from both XRD and Raman analysis. It has shown from X-ray photoelectron spectroscopy analysis that this nanofiber formed the adequate stoichiometry ratio approximately 2:1:4. Consequently, electrospinning of these materials has considerable potential for the fabrication of nanoscale ternary semiconductors fibers using a low-cost and simple process for both low-cost and high-efficient energy-conversion applications.
Keywords: Electrospinning technique, Cu2WS4 nanofibers, Physical Properties.
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