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Facile preparation of a Nb2O5 blocking layer for dye-sensitized solar cells

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Abstract

The introduction of a niobium oxide layer between fluorine-doped tin oxide (FTO) and TiO2 electrodes is known to enhance the power conversion efficiency (η) of dye-sensitized solar cells (DSSCs). Nb thin films were deposited on FTO glass substrates using RF magnetron sputtering. TiO2 pastes were then screen-printed onto the Nb thin films. The multilayered structures were annealed at 500 °C in a muffle furnace and assembled with Pt counter electrodes for DSSC performance evaluation. The Nb thin films were oxidized during the calcination process, producing a post-oxidized layer that increased the solar-cell efficiency by about 15 % and the photocurrent density by approximately 25 %.

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Acknowledgments

This research was supported by the Chung-Ang University Research Scholarship Grants in 2012, the Basic Science Research Program (2013-026989) through the National Research Foundation (NRF) funded by the Ministry of Science, ICT & Future Planning (MSIP) of Korea.

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Correspondence to Jongin Hong.

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Sung-Hwan Lim and Kwang-Won Park have equal contribution to this article

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Lim, SH., Park, KW., Jin, M.H. et al. Facile preparation of a Nb2O5 blocking layer for dye-sensitized solar cells. J Electroceram 34, 221–227 (2015). https://doi.org/10.1007/s10832-014-9977-2

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  • DOI: https://doi.org/10.1007/s10832-014-9977-2

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