Journal
ADVANCED MATERIALS
Volume 23, Issue 47, Pages 5624-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201103591
Keywords
photonic crystals; dye-sensitized solar cells; TiO2 nanotubes; electrochemical anodization
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Funding
- Research Grants Council of the Hong Kong Special Administrative Region [PolyU 5349/10E, PolyU 5187/09E]
- Hong Kong Polytechnic University [A-PJ46]
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A TiO2 nanotube layer with a periodic structure is used as a photonic crystal to greatly enhance light harvesting in TiO2 nanotube-based dye-sensitized solar cells. Such a tube-on-tube structure fabricated by a single-step approach facilitates good physical contact, easy electrolyte infiltration, and efficient charge transport. An increase of over 50% in power conversion efficiency is obtained in comparison to reference cells without a photonic crystal layer (under similar total thickness and dye loading).
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