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Issue 18, 2018
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Cost effective perovskite solar cells with a high efficiency and open-circuit voltage based on a perovskite-friendly carbon electrode

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Abstract

For low-temperature paintable carbon based perovskite solar cells (PSCs), the commercial carbon paste utilized to prepare carbon electrodes damages the well-fabricated perovskite films, resulting in bad photoelectric properties. Herein, we have successfully prepared a low temperature perovskite-friendly and environmentally benign carbon paste using propylene glycol monomethyl ether acetate as a solvent, which has shown a high electrical conductivity. More importantly, with the exclusive carbon paste, the perovskite film keeps a dense and uniform morphology. The as-developed PSCs do not involve the fabrication of organic hole transport materials (HTMs) which are generally expensive and air-sensitive, greatly limiting the long-term stability. The cost-effective HTM-free carbon-based PSCs demonstrate a champion power conversion efficiency of up to 13.5% and a champion open-circuit voltage of up to 1.07 V with an active area of 0.1 cm2, the highest value reported so far for carbon-based PSCs with MAPbI3 as the light harvester. Furthermore, a long-time stability test shows that the solar cells with the as-prepared carbon electrode retain more than 90% of their initial power conversion efficiency after 960 h.

Graphical abstract: Cost effective perovskite solar cells with a high efficiency and open-circuit voltage based on a perovskite-friendly carbon electrode

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Publication details

The article was received on 12 Dec 2017, accepted on 13 Feb 2018 and first published on 16 Feb 2018


Article type: Paper
DOI: 10.1039/C7TA10871K
Citation: J. Mater. Chem. A, 2018,6, 8271-8279
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    Cost effective perovskite solar cells with a high efficiency and open-circuit voltage based on a perovskite-friendly carbon electrode

    Q. Chu, B. Ding, Q. Qiu, Y. Liu, C. Li, C. Li, G. Yang and B. Fang, J. Mater. Chem. A, 2018, 6, 8271
    DOI: 10.1039/C7TA10871K

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