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Non-doped and unsorted single-walled carbon nanotubes as carrier-selective, transparent, and conductive electrode for perovskite solar cells

  • Takahiro Sakaguchi (a1), Il Jeon (a1), Takaaki Chiba (a1), Ahmed Shawky (a1) (a2), Rong Xiang (a1), Shohei Chiashi (a1), Esko I. Kauppinen (a3), Nam-Gyu Park (a4), Yutaka Matsuo (a1) (a5) and Shigeo Maruyama (a1) (a6)...

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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Corresponding author

Address all correspondence to Nam-Gyu Park at npark@skku.edu, Yutaka Matsuo at matsuo@photon.t.u-tokyo.ac.jp, Shigeo Maruyama at maruyama@photon.t.u-tokyo.ac.jp

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These authors contributed equally to this work.

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References

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Sakaguchi et al. supplementary material 1

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