Journal
NANO TODAY
Volume 6, Issue 1, Pages 91-109Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.nantod.2010.12.007
Keywords
Dye-sensitized solar cell; Nanostructure; Nanoparticles; Nanowires; Aggregates; Light scattering
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Funding
- U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials and Engineering [DE-FG02-07ER46467]
- National Science Foundation [DMR 1035196]
- Air Force Office of Scientific Research (AFOSR-MURI) [FA9550-06-1-0326]
- University of Washington
- Washington Research Foundation
- Intel Corporation
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Nanotechnology opens a door to tailing materials and creating various nanostructures for use in dye-sensitized solar cells. This review classifies the nanostructures into (1) nanoparticles, which offer large surface area to photoelectrode film for dye-adsorption, (2) core shell structures, which are derived from the nanoparticles however with a consideration to reduce charge recombination by forming a coating layer, (3) one-dimensional nanostructures such as nanowires and nanotubes, which provide direct pathways for electron transport much faster than in the nanoparticle films, and (4) three-dimensional nanostructures such as nanotetrapods, branched nanowires or nanotubes, and oxide aggregates, which not only emphasize providing large surface area but also aim at attaining more effective light harvesting and charge transport or collection. The review ends with an outlook proposing that the oxide aggregates are a potentially promising structure which may possibly achieve higher efficiency than the record by reason that the bifunction of aggregates in providing large surface area and generating light scattering allows for photoelectrode film thinner than usual and thus decreases the charge recombination of DSCs. (C) 2010 Elsevier Ltd. All rights reserved.
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