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Growth of single-crystalline rutile TiO2 nanorods on fluorine-doped tin oxide glass for organic–inorganic hybrid solar cells

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Abstract

Single-crystalline TiO2 nanorods (TiO2 NRs) are grown directly on FTO substrates by hydrothermal methods. The diameters and lengths of TiO2 NRs are easily controlled by growth conditions. When used in hybrid solar cells, TiO2 NRs function as the continuous pathway for fast electron transport to charge collecting electrode, demonstrating a high power conversion efficiency (PCE) of 3.21% with 140 nm long TiO2 NRs. The bilayer polymer coating are introduced into 500 nm long TiO2 NRs to reduce the surface roughness, resulting in the improved contact between the polymer blend and silver electrode and an enhanced PCE from 2.70 to 3.07%.

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Acknowledgments

JTX gratefully acknowledges the fellowship from China Scholarship Council. And this work has been supported in part by National Natural Science Foundation of China (21173042), Natural Science Foundation of Jiangsu Province (BK2011589), the US Department of Energy, Office of Basic Energy Sciences, Division of Materials and Engineering under Award No. DE-FG02-07ER46467 (Q.F.Z.) on the microstructure characterization and some power conversion efficiency measurements, National Science Foundation (DMR-1035196), Boeing-Steiner Endowment, University of Washington TGIF grant and Intel Corporation. The AFM analysis was performed at Prof. Jiangyu Li’s laboratory, Department of Mechanical Engineering, University of Washington. ZQL and OW also acknowledge the fellowship from China Scholarship Council and Thailand government, respectively.

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, Jiangsu, China

    Junting Xi & Yueming Sun

  2. Department of Materials Science and Engineering, University of Washington, Seattle, WA, 98195, USA

    Junting Xi, Orawan Wiranwetchayan, Qifeng Zhang, Zhiqiang Liang & Guozhong Cao

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  1. Junting Xi
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  2. Orawan Wiranwetchayan
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  3. Qifeng Zhang
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  4. Zhiqiang Liang
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  5. Yueming Sun
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  6. Guozhong Cao
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Correspondence to Yueming Sun or Guozhong Cao.

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Xi, J., Wiranwetchayan, O., Zhang, Q. et al. Growth of single-crystalline rutile TiO2 nanorods on fluorine-doped tin oxide glass for organic–inorganic hybrid solar cells. J Mater Sci: Mater Electron 23, 1657–1663 (2012). https://doi.org/10.1007/s10854-012-0643-7

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  • DOI: https://doi.org/10.1007/s10854-012-0643-7

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