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Issue 10, 2014
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Cost-efficient clamping solar cells using candle soot for hole extraction from ambipolar perovskites

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Abstract

Ambient-unstable hole transporters and expensive and complicated noble metal electrode deposition are incompatible with the large scale and low-cost production of perovskite solar cells and thus would hamper their commercialization. Herein we report a new modality of perovskite solar cells that do away with the use of conventional hole transporters by directly clamping a selective hole extraction electrode made of candle soot and a deliberately engineered perovskite photoanode. The key soot/perovskite interface, which promotes hole extraction and electron blocking by forming a Schottky junction, was established seamlessly by pre-wetting and reaction embedding the carbon particles. Femtosecond time-resolved photoluminescence revealed a high hole extraction rate at 1.92 ns−1. We have now achieved 11.02% efficiency, making an important step towards roll-to-roll production of perovskite solar cells.

Graphical abstract: Cost-efficient clamping solar cells using candle soot for hole extraction from ambipolar perovskites

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Publication details

The article was received on 26 Jun 2014, accepted on 12 Aug 2014 and first published on 12 Aug 2014


Article type: Communication
DOI: 10.1039/C4EE01983K
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Citation: Energy Environ. Sci., 2014,7, 3326-3333

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    Cost-efficient clamping solar cells using candle soot for hole extraction from ambipolar perovskites

    Z. Wei, K. Yan, H. Chen, Y. Yi, T. Zhang, X. Long, J. Li, L. Zhang, J. Wang and S. Yang, Energy Environ. Sci., 2014, 7, 3326
    DOI: 10.1039/C4EE01983K

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