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Taylor and Francis Group, Science and Technology of Advanced Materials, 1(18), p. 68-75, 2017

DOI: 10.1080/14686996.2016.1261602

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Ternary semitransparent organic solar cells with a laminated top electrode

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Tinted and colour-neutral semitransparent organic photovoltaic elements are of interest for building-integrated applications in windows, on glass roofs or on facades. We demonstrate a semitransparent organic photovoltaic cell with a dry-laminated top electrode that achieves a uniform average visible transmittance of 51% and a power conversion efficiency of 3%. The photo-active material is based on a majority blend composed of a visibly absorbing donor polymer and a fullerene acceptor, to which a selective near-infrared absorbing cyanine dye is added as a minority component. Our results show that organic ternary blends are attractive for the fabrication of semitransparent solar cells in general, because a guest component with a complementary absorption can compensate for the inevitably reduced current generation capability of a high-performing binary blend when applied as a thin, semitransparent film. [GRAPHICS] .