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Issue 46, 2017
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Highly conductive Na-embedded carbon nanowalls for hole-transport-material-free perovskite solar cells without metal electrodes

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Abstract

New generation solar cells are necessary to replace current silicon solar panels for low cost and high energy conversion efficiency. The perovskite photovoltaic device is a rising star among the 3rd generation solar cells due to its rapidly increased energy conversion efficiency. Recently invented Na-embedded carbon (Na@C) nanowalls, which possess ultrahigh conductivity and a large accessible surface area, are a very promising electrode material. Herein, the Na@C nanowall material was demonstrated as an excellent counter electrode for HTM-free perovskite solar cells (PSCs), leading to a high power conversion efficiency of 8.89% under the AM 1.5G simulated sunlight. This efficiency is almost two times as high as that (4.56%) of a PSC with regular graphene synthesized via chemical exfoliation of graphite.

Graphical abstract: Highly conductive Na-embedded carbon nanowalls for hole-transport-material-free perovskite solar cells without metal electrodes

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Publication details

The article was received on 01 Sep 2017, accepted on 03 Oct 2017 and first published on 04 Oct 2017


Article type: Paper
DOI: 10.1039/C7TA07730K
Citation: J. Mater. Chem. A, 2017,5, 24126-24130
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    Highly conductive Na-embedded carbon nanowalls for hole-transport-material-free perovskite solar cells without metal electrodes

    W. Wei and Y. H. Hu, J. Mater. Chem. A, 2017, 5, 24126
    DOI: 10.1039/C7TA07730K

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