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Hydrothermal growth of bilayered rutile-phased TiO2 nanorods/micro-size TiO2 flower in highly acidic solution for dye-sensitized solar cell

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Abstract

Aligned rutile-phased TiO2 (r-TNRs) nanorods and micro-size rutile-phased TiO2 flowers (r-TFs) films were prepared on fluorine-doped tin oxide (FTO) substrate using highly acidic solution by two steps of hydrothermal process. The hydrothermal process was done at 150 °C in 5 h for the first step and 2 h for the second step. These films were used as a photoelectrode in dye-sensitized solar cell (DSC) application. Aligned r-TNRs and r-TFs were prepared using one-step and two-step hydrothermal processes, respectively. At the end of second step hydrothermal process, micro-size rutile-phased TiO2 flowers (r-TFs) were observed on top of r-TNRs (FTO/r-TNRs/r-TFs). Power conversion efficiencies for both aligned r-TNRs and r-TNRs/r-TFs were compared. From the results, DSC made of r-TNRs only produced energy conversion efficiency of 1.52 % and DSC made of r-TNRs/r-TFs gave excellent energy conversion efficiency (η) of 4.27 %.

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Acknowledgments

The authors would like to thank to Ministry of Education (MOE), Malaysia, Research Institute of Electronics, Shizuoka University and Universiti Tun Hussein Onn Malaysia (UTHM) for Exploratory Research Grant Scheme (ERGS) Vot E022.

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Authors and Affiliations

  1. Microelectronics and Nanotechnology-Shamsuddin Research Centre (MiNT-SRC), Universiti Tun Hussein Onn Malaysia, 86400, Batu Pahat, Johor, Malaysia

    M. K. Ahmad

  2. Research Institute of Electronics, Shizuoka University, Hamamatsu, Shizuoka, 432-8011, Japan

    V. M. Mohan & K. Murakami

Authors
  1. M. K. Ahmad
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  2. V. M. Mohan
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  3. K. Murakami
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Correspondence to M. K. Ahmad.

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Ahmad, M.K., Mohan, V.M. & Murakami, K. Hydrothermal growth of bilayered rutile-phased TiO2 nanorods/micro-size TiO2 flower in highly acidic solution for dye-sensitized solar cell. J Sol-Gel Sci Technol 73, 655–659 (2015). https://doi.org/10.1007/s10971-015-3615-6

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  • DOI: https://doi.org/10.1007/s10971-015-3615-6

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