dc.contributor.authorSabba, Dharani
dc.contributor.authorAgarwala, Shweta
dc.contributor.authorPramana, Stevin S.
dc.contributor.authorMhaisalkar, Subodh
dc.date.accessioned2014-02-14T07:33:27Z
dc.date.available2014-02-14T07:33:27Z
dc.date.copyright2014en_US
dc.date.issued2014
dc.identifier.citationSabba, D., Agarwala, S., Pramana, S. S., & Mhaisalkar, S. (2014). A maskless synthesis of TiO2-nanofiber-based hierarchical structures for solid-state dye-sensitized solar cells with improved performance. Nanoscale Research Letters, 9(1), 14.en_US
dc.identifier.issn1556-276Xen_US
dc.identifier.urihttp://hdl.handle.net/10220/18798
dc.description.abstractTiO2 hierarchical nanostructures with secondary growth have been successfully synthesized on electrospun nanofibers via surfactant-free hydrothermal route. The effect of hydrothermal reaction time on the secondary nanostructures has been studied. The synthesized nanostructures comprise electrospun nanofibers which are polycrystalline with anatase phase and have single crystalline, rutile TiO2 nanorod-like structures growing on them. These secondary nanostructures have a preferential growth direction [110]. UV–vis spectroscopy measurements point to better dye loading capability and incident photon to current conversion efficiency spectra show enhanced light harvesting of the synthesized hierarchical structures. Concomitantly, the dye molecules act as spacers between the conduction band electrons of TiO2 and holes in the hole transporting medium, i.e., spiro-OMeTAD and thus enhance open circuit voltage. The charge transport and recombination effects are characterized by electrochemical impedance spectroscopy measurements. As a result of improved light harvesting, dye loading, and reduced recombination losses, the hierarchical nanofibers yield 2.14% electrochemical conversion efficiency which is 50% higher than the efficiency obtained by plain nanofibers.en_US
dc.language.isoenen_US
dc.relation.ispartofseriesNanoscale research lettersen_US
dc.rights© 2014 Sabba et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en_US
dc.subjectDRNTU::Engineering::Materials::Nanostructured materials
dc.titleA maskless synthesis of TiO2-nanofiber-based hierarchical structures for solid-state dye-sensitized solar cells with improved performanceen_US
dc.typeJournal Article
dc.contributor.researchResearch Techno Plazaen_US
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.identifier.doihttp://dx.doi.org/10.1186/1556-276X-9-14
dc.description.versionPublished versionen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record