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Cho Tung Yip, Haitao Huang, Limin Zhou, Keyu Xie, Yu Wang, Tianhua Feng, Jensen Li and Wing Yim Tam Direct and Seamless Coupling of TiO2 Nanotube Photonic Crystal to Dye-Sensitized Solar Cell: A Single-Step Approach Advanced Materials 23

Version of Record online: 7 NOV 2011 | DOI: 10.1002/adma.201103591

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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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