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Electrospun coaxial titanium dioxide/carbon nanofibers for use in anodes of dye-sensitized solar cells

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dc.contributor.author Hieu, Nguyen Trung ko
dc.contributor.author Baik, , Seung Jae ko
dc.contributor.author Jun, Yongseok ko
dc.contributor.author Lee, Minoh ko
dc.contributor.author Chung, Ok Hee ko
dc.contributor.author Park, Jun Seo ko
dc.date.available 2014-09-23T07:04:00Z -
dc.date.created 2014-09-22 ko
dc.date.issued 2014-10 ko
dc.identifier.citation ELECTROCHIMICA ACTA, v.142, pp.144 - 151 ko
dc.identifier.issn 0013-4686 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/6345 -
dc.description.abstract TiO2/carbon coaxial-structured nanofibers (TCNFs), applied as photoanodes in dye-sensitized solar cells (DSSCs), were fabricated by coaxial electrospinning. The precursor of the TCNFs was electrospun using polyacrylonitrile in the core and a blend of titanium isopropoxide and polyvinylpyrrolidone in the shell. After calcination at 500 °C for 2 h in air and subsequent carbonization at 1000 °C for 2 h in nitrogen, the TCNFs were formed with nanocrystalline TiO2 in the shell layer and carbon in the core. The structure and morphology of the TCNFs were characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The photovoltaic properties of the TCNF photoelectrode-based DSSCs were investigated by determining current density-voltage (J-V) curves, incident photon-to-current conversion efficiency (IPCE), and electrochemical impedance spectroscopy (EIS). The power conversion efficiency (PCE) of the TCNF photoelectrode-based DSSC was 7.5%, higher than those of DSSCs with TiO 2 nanofiber (TNF)- and TiO2 nanoparticle (TNP)-based photoelectrodes. An increase in the electron transport and suppression of charge recombination were found with the carbon core and nanocrystalline TiO 2 shell configuration of the TCNFs. ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher PERGAMON-ELSEVIER SCIENCE LTD ko
dc.title Electrospun coaxial titanium dioxide/carbon nanofibers for use in anodes of dye-sensitized solar cells ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84906690568 ko
dc.identifier.wosid 000343626400018 ko
dc.type.rims ART ko
dc.description.wostc 2 *
dc.description.scopustc 0 *
dc.date.tcdate 2015-05-06 *
dc.date.scptcdate 2014-09-22 *
dc.identifier.doi 10.1016/j.electacta.2014.07.032 ko
dc.identifier.url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84906690568 ko
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