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Issue 5, 2012
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A facile route to vertically aligned electrospun SnO2 nanowires on a transparent conducting oxide substrate for dye-sensitized solar cells

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Abstract

We demonstrate a large-scale production of aligned SnO2 nanofibers with a multi-nozzle electrospinning method combined with an air-shield enclosed rotating drum collector. The production rate by this multi-nozzle approach is several times higher than that of the single-nozzle electrospinning. The nanofibers produced were having a short range of diameters similar to the case of nanofibers produced by single nozzle electrospinning. The well-aligned nanofibers are subsequently processed into vertically oriented SnO2 nanowires on an FTO substrate. The average diameter and length of the wires were 75 ± 25 nm and 19 ± 2 μm, respectively. Dye-sensitized solar cells using this nanostructured material as the working electrode yielded a short-circuit current density (Jsc) of 9.9 mA cm−2 (which is 42% higher than that achieved by nanowires produced by other methods), an open-circuit voltage (Voc) of 0.525 V and a power conversion efficiency (η) of 2.53%. We believe that improvement of the multi-nozzle electrospinning is highly promising for commercialization due to simplicity and easiness of fabricating the spinneret, control over the diameter and spatial orientation of the fibers.

Graphical abstract: A facile route to vertically aligned electrospun SnO2 nanowires on a transparent conducting oxide substrate for dye-sensitized solar cells

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Publication details

The article was received on 07 Oct 2011, accepted on 17 Nov 2011 and first published on 09 Dec 2011


Article type: Paper
DOI: 10.1039/C1JM15047B
Citation: J. Mater. Chem., 2012,22, 2166-2172
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    A facile route to vertically aligned electrospun SnO2 nanowires on a transparent conducting oxide substrate for dye-sensitized solar cells

    T. Krishnamoorthy, M. Z. Tang, A. Verma, A. S. Nair, D. Pliszka, S. G. Mhaisalkar and S. Ramakrishna, J. Mater. Chem., 2012, 22, 2166
    DOI: 10.1039/C1JM15047B

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