TY - JOUR A1 - Braunger, Steffen A1 - Mundt, Laura E. A1 - Wolff, Christian Michael A1 - Mews, Mathias A1 - Rehermann, Carolin A1 - Jost, Marko A1 - Tejada, Alvaro A1 - Eisenhauer, David A1 - Becker, Christiane A1 - Andres Guerra, Jorge A1 - Unger, Eva A1 - Korte, Lars A1 - Neher, Dieter A1 - Schubert, Martin C. A1 - Rech, Bernd A1 - Albrecht, Steve T1 - Cs(x)FA(1-x)Pb(l(1-y)Br(y))(3) Perovskite Compositions BT - the Appearance of Wrinkled Morphology and its Impact on Solar Cell Performance JF - The journal of physical chemistry : C, Nanomaterials and interfaces N2 - We report on the formation of wrinkle-patterned surface morphologies in cesium formamidinium-based Cs(x)FA(1-y)Pb(I1-yBry)(3) perovskite compositions with x = 0-0.3 and y = 0-0.3 under various spin-coating conditions. By varying the Cs and Br contents, the perovskite precursor solution concentration and the spin-coating procedure, the occurrence and characteristics of the wrinkle-shaped morphology can be tailored systematically. Cs(0.17)FA(0.83)Pb(I0.83Br0.17)(3) perovskite layers were analyzed regarding their surface roughness, microscopic structure, local and overall composition, and optoelectronic properties. Application of these films in p-i-n perovskite solar cells (PSCs) with indium-doped tin oxide/NiOx/perovskite/C-60/bathocuproine/Cu architecture resulted in up to 15.3 and 17.0% power conversion efficiency for the flat and wrinkled morphology, respectively. Interestingly, we find slightly red-shifted photoluminescence (PL) peaks for wrinkled areas and we are able to directly correlate surface topography with PL peak mapping. This is attributed to differences in the local grain size, whereas there is no indication for compositional demixing in the films. We show that the perovskite composition, crystallization kinetics, and layer thickness strongly influence the formation of wrinkles which is proposed to be related to the release of compressive strain during perovskite crystallization. Our work helps us to better understand film formation and to further improve the efficiency of PSCs with widely used mixed-perovskite compositions. Y1 - 2018 U6 - https://doi.org/10.1021/acs.jpcc.8b06459 SN - 1932-7447 SN - 1932-7455 VL - 122 IS - 30 SP - 17123 EP - 17135 PB - American Chemical Society CY - Washington ER - TY - JOUR A1 - Tockhorn, Philipp A1 - Sutter, Johannes A1 - Cruz Bournazou, Alexandros A1 - Wagner, Philipp A1 - Jäger, Klaus A1 - Yoo, Danbi A1 - Lang, Felix A1 - Grischek, Max A1 - Li, Bor A1 - Li, Jinzhao A1 - Shargaieva, Oleksandra A1 - Unger, Eva A1 - Al-Ashouri, Amran A1 - Köhnen, Eike A1 - Stolterfoht, Martin A1 - Neher, Dieter A1 - Schlatmann, Rutger A1 - Rech, Bernd A1 - Stannowski, Bernd A1 - Albrecht, Steve A1 - Becker, Christiane T1 - Nano-optical designs for high-efficiency monolithic perovskite-silicon tandem solar cells JF - Nature nanotechnology N2 - Designing gentle sinusoidal nanotextures enables the realization of high-efficiency perovskite-silicon solar cells
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%. Y1 - 2022 U6 - https://doi.org/10.1038/s41565-022-01228-8 SN - 1748-3387 SN - 1748-3395 VL - 17 IS - 11 SP - 1214 EP - 1221 PB - Nature Publishing Group CY - London [u.a.] ER - TY - JOUR A1 - Aichert, Ingrid A1 - Staiger, Anja A1 - Schulte-Mäter, Anne A1 - Becker-Redding, Ulrike A1 - Stahn, Corinna A1 - Peschke, Claudia A1 - Heide, Judith A1 - Ott, Susan A1 - Herrmann, Heike A1 - Völsch, Juliane A1 - Mayer, Jörg A1 - Rohnke, Lucie A1 - Frank, Ulrike A1 - Stadie, Nicole A1 - Jentsch, Nadine A1 - Blech, Anke A1 - Kurtenbach, Stephanie A1 - Thieke, Johanna A1 - Schröder, Astrid A1 - Stahn, Corinna A1 - Hörnig, Robin A1 - Burchert, Frank A1 - De Bleser, Ria A1 - Heister, Julian A1 - Bartels, Luise A1 - Würzner, Kay-Michael A1 - Böhme, Romy A1 - Burmester, Juliane A1 - Krajewski, Melanie A1 - Nager, Wido A1 - Jungehülsing, Gerhard Jan A1 - Wartenburger, Isabell A1 - Jöbges, Michael A1 - Schwilling, Eleonore A1 - Lidzba, Karen A1 - Winkler, Susanne A1 - Konietzko, Andreas A1 - Krägeloh-Mann, Ingeborg A1 - Rilling, Eva A1 - Wilken, Rainer A1 - Wismann, Kathrin A1 - Glandorf, Birte A1 - Hoffmann, Hannah A1 - Hinnenkamp, Christiane A1 - Rohlmann, Insa A1 - Ludewigt, Jacqueline A1 - Bittner, Christian A1 - Orlov, Tatjana A1 - Claus, Katrin A1 - Ehemann, Christine A1 - Winnecken, Andreas A1 - Hummel, Katja A1 - Breitenstein, Sarah ED - Wahl, Michael ED - Stahn, Corinna ED - Hanne, Sandra ED - Fritzsche, Tom T1 - Spektrum Patholinguistik = Schwerpunktthema: Von der Programmierung zur Artikulation : Sprechapraxie bei Kindern und Erwachsenen N2 - Das 3. Herbsttreffen Patholinguistik fand am 21. November 2009 an der Universität Potsdam statt. Der vorliegende Tagungsband enthält die drei Hauptvorträge zum Schwerpunktthema „Von der Programmierung zu Artikulation: Sprechapraxie bei Kindern und Erwachsenen“. Darüber hinaus enthält der Band die Beiträge aus dem Spektrum Patholinguistik, sowie die Abstracts der Posterpräsentationen. N2 - The 3rd Herbsttreffen Patholinguistik was held on November 21st, 2009 at the University of Potsdam. These proceedings contain the three main lectures of the central topic „From programming to articulation: Apraxia of speech of children and adults “. Additionally this volume contains the contributions of Spektrum Patholinguistik, as well as the abstracts of the poster presentations. T3 - Spektrum Patholinguistik - 3 KW - Patholinguistik KW - Sprechapraxie KW - Sprachtherapie KW - patholinguistics KW - apraxia of speech KW - speech and language therapy Y1 - 2010 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-45470 SN - 978-3-86956-079-3 SN - 1869-3822 SN - 1866-9433 IS - 3 PB - Universitätsverlag Potsdam CY - Potsdam ER -