@article{TockhornSutterCruzBournazouetal.2022,
  author    = {Tockhorn, Philipp and Sutter, Johannes and Cruz Bournazou, Alexandros and Wagner, Philipp and J{\"a}ger, Klaus and Yoo, Danbi and Lang, Felix and Grischek, Max and Li, Bor and Li, Jinzhao and Shargaieva, Oleksandra and Unger, Eva and Al-Ashouri, Amran and K{\"o}hnen, Eike and Stolterfoht, Martin and Neher, Dieter and Schlatmann, Rutger and Rech, Bernd and Stannowski, Bernd and Albrecht, Steve and Becker, Christiane},
  title     = {Nano-optical designs for high-efficiency monolithic perovskite-silicon tandem solar cells},
  series = {Nature nanotechnology},
  volume    = {17},
  journal   = {Nature nanotechnology},
  number    = {11},
  publisher = {Nature Publishing Group},
  address   = {London [u.a.]},
  issn      = {1748-3387},
  doi       = {10.1038/s41565-022-01228-8},
  pages     = {1214 -- 1221},
  year      = {2022},
  abstract  = {Designing gentle sinusoidal nanotextures enables the realization of high-efficiency perovskite-silicon solar cells <br /> Perovskite-silicon tandem solar cells offer the possibility of overcoming the power conversion efficiency limit of conventional silicon solar cells. Various textured tandem devices have been presented aiming at improved optical performance, but optimizing film growth on surface-textured wafers remains challenging. Here we present perovskite-silicon tandem solar cells with periodic nanotextures that offer various advantages without compromising the material quality of solution-processed perovskite layers. We show a reduction in reflection losses in comparison to planar tandems, with the new devices being less sensitive to deviations from optimum layer thicknesses. The nanotextures also enable a greatly increased fabrication yield from 50\% to 95\%. Moreover, the open-circuit voltage is improved by 15 mV due to the enhanced optoelectronic properties of the perovskite top cell. Our optically advanced rear reflector with a dielectric buffer layer results in reduced parasitic absorption at near-infrared wavelengths. As a result, we demonstrate a certified power conversion efficiency of 29.80\%.},
  language  = {en}
}
@misc{SoellKoestlerKrauseetal.2008,
  author    = {S{\"o}ll, {\"A}nne and K{\"o}stler, Andreas and Krause, Regina and Ludwig, Joachim and Pohlenz, Philipp and R{\"o}ßler, Dirk and Kirf, Marcel and Klein, Armin and Wagner, Nelli and Angelow, J{\"u}rgen},
  title     = {Portal = Pl{\"a}ne vorgelegt: Maßnahmen zur Studienreform},
  number    = {10-12/2008},
  organization    = {Universit{\"a}t Potsdam, Referat f{\"u}r Presse- und {\"O}ffentlichkeitsarbeit},
  issn      = {1618-6893},
  doi       = {10.25932/publishup-44016},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-440162},
  pages     = {58},
  year      = {2008},
  abstract  = {Aus dem Inhalt: - Pl{\"a}ne vorgelegt: Maßnahmen zur Studienreform - Fische l{\"u}gen beim Sex - K{\"a}fersammlerin des 21. Jahrhunderts},
  language  = {de}
}
@misc{NeyerBodenReicheetal.2008,
  author    = {Neyer, Franz and Boden, Michael and Reiche, Kathenna and Nowitz, Alex and Ravic Strubel, Antje and Lachmann, Torsten and Palent, Andrea and Schubert, Mike and Heide, Judith and Rowe, Philipp and Peitzker, Tania and Wicke, Markus and Neitzke, Kai and Wagner, Nelli},
  title     = {Portal alumni},
  series = {Das Ehemaligen-Magazin der Universit{\"a}t Potsdam},
  volume    = {2008},
  journal   = {Das Ehemaligen-Magazin der Universit{\"a}t Potsdam},
  number    = {6},
  doi       = {10.25932/publishup-48213},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-482134},
  year      = {2008},
  abstract  = {Liebe Leserin, lieber Leser, Castingshows schießen in letzter Zeit wie Pilze aus dem Boden. Ein Mangel an Bewerbern f{\"u}r diese Formate scheint nicht zu bestehen. Reich und ber{\"u}hmt sein wie Leonardo DiCaprio, der angeblich sogar mitten im brasilianischen Regenwald von einem Indianer erkannt wurde das ist das Ziel. Die erhoffte Prominenz ist bei Kandidaten dieser Shows oft Selbstzweck. Aber es gibt nat{\"u}rlich auch noch Menschen, die ihre Bekanntheit ihrer k{\"u}nstlerischen Passion, ihrem politischen Engagement oder ihren sportlichen Leistungen verdanken. Mitunter ist es diesen Menschen sogar eher l{\"a}stig als angenehm, wenn sie im Rampenlicht stehen. Nach solchen Menschen aus dem Kreise unserer Ehemaligen haben wir gesucht und sind f{\"u}ndig geworden. Ihren Werdegang k{\"o}nnen Sie in unserem Titelthema nachlesen. Wie Prominenz und Pers{\"o}nlichkeit sich gegenseitig beeinflussen, warum Menschen {\"u}berhaupt im Licht der {\"O}ffentlichkeit stehen wollen und wie man mit den negativen Seiten der eigenen Bekanntheit umgehen kann, erl{\"a}utert Pers{\"o}nlichkeitspsychologe Prof. Dr. Franz Neyer in einem einf{\"u}hrenden Artikel. Unter der Rubrik "alumni insight" lesen Sie beispielsweise, wie man in Russland eine Firma gr{\"u}ndet oder vor welchen Herausforderungen ein Deutschlehrer in Usbekistan steht. Falls Sie sich gerade bewerben und noch Tipps zum Verfassen Ihres Lebenslaufs suchen, k{\"o}nnte ein Blick in die Rubrik "wegweiser" hilfreich sein.},
  language  = {de}
}
@article{LangKoehnenWarbyetal.2021,
  author    = {Lang, Felix and K{\"o}hnen, Eike and Warby, Jonathan and Xu, Ke and Grischek, Max and Wagner, Philipp and Neher, Dieter and Korte, Lars and Albrecht, Steve and Stolterfoht, Martin},
  title     = {Revealing fundamental efficiency limits of monolithic perovskite/silicon tandem photovoltaics through subcell characterization},
  series = {ACS Energy Letters},
  volume    = {6},
  journal   = {ACS Energy Letters},
  number    = {11},
  publisher = {American Chemical Society},
  address   = {Washington},
  issn      = {2380-8195},
  doi       = {10.1021/acsenergylett.1c01783},
  pages     = {3982 -- 3991},
  year      = {2021},
  abstract  = {Perovskite/silicon tandem photovoltaics (PVs) promise to accelerate the decarbonization of our energy systems. Here, we present a thorough subcell diagnosis methodology to reveal deep insights into the practical efficiency limitations of state-of-the-art perovskite/silicon tandem PVs. Our subcell selective intensity-dependent photoluminescence (PL) and injection-dependent electroluminescence (EL) measurements allow independent assessment of pseudo-V-OC and power conversion efficiencies (PCEs) for both subcells. We reveal identical metrics from PL and EL, which implies well-aligned energy levels throughout the entire cell. Relatively large ideality factors and insufficient charge extraction, however, cause each a fill factor penalty of about 6\% (absolute). Using partial device stacks, we then identify significant losses in standard perovskite subcells due to bulk and interfacial recombination. Lastly, we present strategies to minimize these losses using triple halide (CsFAPb(IBrCI)(3)) based perovskites. Our results give helpful feedback for device development and lay the foundation toward advanced perovskite/silicon tandem PVs capable of exceeding 33\% PCE.},
  language  = {en}
}