Full metadata record

DC FieldValueLanguage
dc.contributor.author이병홍-
dc.contributor.author송미연-
dc.contributor.author장성연-
dc.contributor.author조성무-
dc.contributor.author곽승엽-
dc.contributor.author김동영-
dc.date.accessioned2015-12-02T15:20:05Z-
dc.date.available2015-12-02T15:20:05Z-
dc.date.issued200912-
dc.identifier.citationVOL 113, NO 51, 21453-21457-
dc.identifier.issn1932-7447-
dc.identifier.other31784-
dc.identifier.urihttp://pubs.kist.re.kr/handle/201004/36943-
dc.description.abstractIn this report, dye-sensitized solar cells (DSSCs) with high energy conversion efficiencies were fabricated using TiO2 nanorods electrospun from a solution mixture of titanium n-propoxide and poly(vinyl acetate) in dimethyl formamide. Investigation of the charge transport characteristics of this unique type of DSSC disclosed that the efficiency of the DSSCs was enhanced by optimizing the nanorod morphology to facilitate charge transport. Our TiO2 nanorods have an intrinsically higher sensitizer loading capability than conventional TiO2 nanoparticles and have much slower recombination lifetimes compared to conventional nanoparticles. Long electron lifetime in nanorod electrode contributes to the enhanced effective photocarrier collection as well as the conversion efficiency. The electron transport behavior of nanorod photoelectrodes was further improved by TiCl4 post-treatment. The post-treatment reduces the pore volume of nanorod photoelectrodes while improving inter-rod connectivity and enhancing electron diffusion. The electron diffusion coefficient of posttreated nanorod was ∼51% higher than that of an untreated one, leading to a charge collection efficiency that was 19% higher at a incident photonflux of 8.1 × 1016 cm-2 s-1. Finally, the efficiency of nanorod-based DSSCs was optimized at a photoelectrode thickness of 14 μm to achieve 9.52% under masked illumination of simulated solar light, AM 1.5 Global (Voc = 761 mV, Jsc = 17.6 mA cm-2, fill factor= 70.0%).-
dc.publisherThe journal of physical chemistry. C, Nanomaterials and Interfaces.-
dc.subjectdye-sensitized solar cell-
dc.subjectelectrospinning-
dc.subjectTiO2 nanorod-
dc.subjectelectron transport-
dc.titleCharge Transport Characteristics of High Efficiency Dye-Sensitized Solar Cells Based on Electrospun TiO2 Nanorod Photoelectrodes-
dc.typeArticle-
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE