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Metals 2016, 6(1), 21; doi:10.3390/met6010021

π-Conjugated Materials as the Hole-Transporting Layer in Perovskite Solar Cells

XLIM UMR 7252, Université de Limoges/CNRS, Faculté des Sciences et Techniques de Limoges, 87060 Limoges Cedex, France
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Academic Editor: Bruno Schmaltz
Received: 4 December 2015 / Accepted: 5 January 2016 / Published: 12 January 2016
(This article belongs to the Special Issue Synthetic Metals)
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Abstract

Hybrid organometal halide perovskites have attracted much attention these past four years as the new active layer for photovoltaic applications. Researches are now intensively focused on the stability issues of these solar cells, the process of fabrication and the design of innovative materials to produce efficient perovskite devices. In this review, we highlight the recent progress demonstrated in 2015 in the design of new π-conjugated organic materials used as hole transporters in such solar cells. Indeed, several of these “synthetic metals” have been proposed to play this role during the last few years, in an attempt to replace the conventional 2,2′,7,7′-tetrakis-(N,N-di-4-methoxyphenylamino)-9,9′-spirobifluorene (Spiro-OMeTAD) reference. Organic compounds have the benefits of low production costs and the abundance of raw materials, but they are also crucial components in order to address some of the stability issues usually encountered by this type of technology. We especially point out the main design rules to reach high efficiencies. View Full-Text
Keywords: perovskite; solar cells; HTM; hole transport materials; molecular glasses; synthetic metals perovskite; solar cells; HTM; hole transport materials; molecular glasses; synthetic metals
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Gheno, A.; Vedraine, S.; Ratier, B.; Bouclé, J. π-Conjugated Materials as the Hole-Transporting Layer in Perovskite Solar Cells. Metals 2016, 6, 21.

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