Peptide-templating dye-sensitized solar cells

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A hollow TiO(2) nanoribbon network electrode for dye-sensitized solar cells (DSSC) was fabricated by a biotemplating process combining peptide self-assembly and atomic layer deposition (ALD). An aromatic peptide of diphenylalanine was assembled into a three-dimensional network consisting of highly entangled nanoribbons. A thin TiO(2) layer was deposited at the surface of the peptide template via the ALD process. After the pyrolysis of the peptide template, a highly entangled nanotubular TiO(2) framework was successfully prepared. Evolution of the crystal phase and crystallite size of the TiO(2) nanostructure was exploited by controlling the calcination temperature. Finally, the hollow TiO(2) nanoribbon network electrode was integrated into DSSC devices and their photochemical performances were investigated. Hollow TiO(2) nanoribbon-based DSSCs exhibited a power conversion efficiency of 3.8%, which is comparable to the conventional TiO(2) nanoparticle-based DSSCs (3.5%). Our approach offers a novel pathway for DSSCs consisting of TiO(2) electrodes via biotemplating.
Publisher
IOP PUBLISHING LTD
Issue Date
2010-05
Language
English
Article Type
Article
Keywords

ATOMIC LAYER DEPOSITION; TRANSPARENT CONDUCTING OXIDE; TIO2 NANOTUBE ARRAYS; NANOWIRES; TRANSPORT; RECOMBINATION; REPLICATION; FABRICATION; EFFICIENCY; TITANIA

Citation

NANOTECHNOLOGY, v.21, no.18

ISSN
0957-4484
DOI
10.1088/0957-4484/21/18/185601
URI
http://hdl.handle.net/10203/20518
Appears in Collection
MS-Journal Papers(저널논문)
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