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Hole-transport material-free perovskite-based solar cells

  • Perovskite Photovoltaics
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Abstract

Recent discoveries have revealed a breakthrough in the photovoltaics (PVs) field using organometallic perovskites as light harvesters in the solar cell. The organometal perovskite arrangement is self-assembled as alternate layers via a simple low-cost procedure. These organometal perovskites promise several benefits not provided by the separate constituents. This overview concentrates on implementing perovskites in PV cells such that the perovskite layers are used as the light harvester as well as the hole-conducting component. Eliminating hole-transport material (HTM) in this solar-cell structure avoids oxidation, reduces costs, and provides better stability and consistent results. Aspects of HTM-free perovskite solar cells discussed in this article include (1) depletion regions, (2) high voltages, (3) panchromatic responses, (4) chemical modifications, and (5) contacts in HTM-free perovskite solar cells. Elimination of HTM could expand possibilities to explore new interfaces in these solar cells, while over the long term, these uniquely structured HTM-free solar cells could offer valuable benefits for future PV and optoelectronics applications.

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Acknowledgment

L.E. thanks the Israel Alternative Energy Foundation (I-SAEF) that financed parts of this research, the Ministry of Industry Trade and Labor Office of the Chief Scientist Kamin project N0.50303, and the Tashtiot project of the Office of the Chief Scientist. The author would like to thank the students who worked on these results: S. Aharon, S. Gamliel, A. Dymshits, A. Rotem, B.E Cohen, T. Englman, and M. Koolyk.

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  1. The Institute of Chemistry, The Hebrew University of Jerusalem, Israel

    Lioz Etgar

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  1. Lioz Etgar
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Etgar, L. Hole-transport material-free perovskite-based solar cells. MRS Bulletin 40, 674–680 (2015). https://doi.org/10.1557/mrs.2015.174

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  • DOI: https://doi.org/10.1557/mrs.2015.174

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