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  1. No Access

    Article

    Emissive and charge-generating donor–acceptor interfaces for organic optoelectronics with low voltage losses

    Intermolecular charge-transfer states at the interface between electron donating (D) and accepting (A) materials are crucial for the operation of organic solar cells but can also be exploited for organic light...

    Sascha Ullbrich, Johannes Benduhn, **angkun Jia, Vasileios C. Nikolis… in Nature Materials (2019)

  2. Article

    Open Access

    Organic narrowband near-infrared photodetectors based on intermolecular charge-transfer absorption

    Blending organic electron donors and acceptors yields intermolecular charge-transfer states with additional optical transitions below their optical gaps. In organic photovoltaic devices, such states play a cru...

    Bernhard Siegmund, Andreas Mischok, Johannes Benduhn, Olaf Zeika… in Nature Communications (2017)

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    Article

    Intrinsic non-radiative voltage losses in fullerene-based organic solar cells

    Organic solar cells demonstrate external quantum efficiencies and fill factors approaching those of conventional photovoltaic technologies. However, as compared with the optical gap of the absorber materials, ...

    Johannes Benduhn, Kristofer Tvingstedt, Fortunato Piersimoni… in Nature Energy (2017)

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    Chapter

    Novel Thin-Film Photovoltaics—Status and Perspectives

    In this chapter, we discuss recent advances in novel thin-film photovoltaic devices which allows novel and low-cost applications of photovoltaics. In particular, we discuss organic and perovskite photovoltaics...

    Benjamin Oesen, Sascha Ullbrich, Johannes Widmer… in Green Photonics and Electronics (2017)