Abstract
Lead halide perovskite solar cells (PSCs) with a structure of glass/FTO/TiO2/CH3NH3PbI3 with single-walled carbon nanotubes (SWNT) as the transparent top electrodes, followed by polymethyl methacrylate (PMMA) over-coating were fabricated. The SWNT-based PSCs do not require expensive metal electrodes and hole-transporting materials yet produce a decent power conversion efficiency of 11.8%, owing to the densifying effect of SWNTs by PMMA. The resulting devices demonstrate reduced hysteresis, improved stability, and increased power conversion efficiency.
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Acknowledgments
We gratefully acknowledge the Research and Education Consortium for Innovation of Advanced Integrated Science by Japan Science and Technology (JST) and Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Numbers (JP25107002, JP15H05760, and 17H06609), the CREST project, NSFC under the Japan-China Scientific Cooperation Program and IRENA Project by JST-EC DG RTD, Strategic International Collaborative Research Program, SICORP. Part of this work is based on results obtained from a project commissioned by the New Energy and Industrial Technology Development Organization (NEDO). N.-G.P. acknowledges financial support from the National Research Foundation of Korea (NRF) grant funded by the Ministry of Science, ICT & Future Planning (MSIP) of Korea under contract No. NRF-2012M3A6A7054861 (Global Frontier R&D Program on Centre for Multiscale Energy System).
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The supplementary material for this article can be found at https://doi.org/10.1557/mrc.2018.142
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Sakaguchi, T., Jeon, I., Chiba, T. et al. Non-doped and unsorted single-walled carbon nanotubes as carrier-selective, transparent, and conductive electrode for perovskite solar cells. MRS Communications 8, 1058–1063 (2018). https://doi.org/10.1557/mrc.2018.142
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DOI: https://doi.org/10.1557/mrc.2018.142