Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
2020Visualizing Morphological Principles for Efficient Photocurrent Generation in Organic Non-Fullerene Acceptor Blends
Köntges, W.; Perkhun, P.; Kammerer, J.; Alkarsifi, R.; Würfel, U.; Margeat, O.; Videlot-Ackermann, C.; Simon, J.-J.; Schröder, R.R.; Ackermann, J.; Pfannmöller, M.
Journal Article
2019Huge VOC Increase despite almost constant Radiative Recombination in planar CsFAPblBr Solar Cells
Herterich, Jan-Philipp; Unmüssig, Moritz; Kohlstädt, Markus; Würfel, Uli
Presentation
2019ITO-Free Organic Photovoltaic Modules Based on Fluorinated Polymers Deposited from Non-Halogenated Solution: A Major Step toward Large-Scale Module Production
Ibraikulov, O.A.; Wang, J.; Kamatham, N.; Heinrich, B.; Méry, S.; Kohlstädt, M.; Würfel, U.; Ferry, S.; Leclerc, N.; Heiser, T.; Lévêque, P.
Journal Article
2019Quantitative Local Loss Analysis of Blade-Coated Perovskite Solar Cells
Mundt, L.; Kwapil, W.; Yakoob, M.A.; Herterich, J.P.; Kohlstädt, M.; Würfel, U.; Schubert, M.C.; Glunz, S.W.
Journal Article
2019Recombination between Photogenerated and Electrode-Induced Charges Dominates the Fill Factor Losses in Optimized Organic Solar Cells
Würfel, U.; Perdigón-Toro, L.; Kurpiers, J.; Wolff, C.M.; Caprioglio, P.; Rech, J.J.; Zhu, J.; Zhan, X.; You, W.; Shoaee, S.; Neher, D.; Stolterfoht, M.
Journal Article
2018Apparent Field-Dependence of the Charge Carrier Generation in Organic Solar Cells as a Result of (Bimolecular) Recombination
Würfel, U.; Unmüssig, M.
Journal Article
2018Correct determination of charge transfer state energy from luminescence spectra in organic solar cells
List, M.; Sarkar, T.; Perkhun, P.; Ackermann, J.; Luo, C.; Würfel, U.
Journal Article
2018Electron-selective contacts via ulta-thin organic interface dipoles for silicon organic heterojunction solar cells
Reichel, C.; Würfel, U.; Winkler, K.; Schleiermacher, H.-F.; Kohlstädt, M.; Unmüssig, M.; Messmer, C.A.; Hermle, M.; Glunz, S.W.
Journal Article
2018From Cell to Mini-Module - Blade Coating and Controlled Drying for Planar Inverted Perovskite Solar Cells
Würfel, U.; Yakoob, M.A.; Herterich, J.; Mundt, L.E.; Kohlstädt, M.
Presentation
2018A matter of drying: Blade-coating of lead acetate sourced planar inverted perovskite solar cells on active areas >1 cm2
Kohlstädt, M.; Yakoob, M.A.; Würfel, U.
Journal Article
2018Silicon-Organic Heterojunction Solar Cells with Electron-Selective Contacts Based on Organic Interface Dipoles
Reichel, C.; Würfel, U.; Winkler, K.; Schleiermacher, H.-F.; Kohlstädt, M.; Unmüssig, M.; Messmer, C.; Hermle, M.; Glunz, S.W.
Conference Paper
2017Distinguishing crystallization stages and their influence on quantum efficiency during perovskite solar cell formation in real-time
Wagner, L.; Mundt, L.E.; Mathiazhagan, G.; Mundus, M.; Schubert, M.C.; Mastroianni, S.; Würfel, U.; Hinsch, A.; Glunz, S.W.
Journal Article
2017Impact of charge carrier mobility and electrode selectivity on the performance of organic solar cells
Spies, A.; Reinhardt, J.; List, M.; Zimmermann, B.; Würfel, U.
Book Article
2017Low Temperature perovskite solar cells with an evaporated TiO2 compact layer for perovskite silicon tandem solar cells
Bett, A.J.; Schulze, P.S.; Winkler, K.; Gasparetto, J.; Ndione, P.F.; Bivour, M.; Hinsch, A.; Kohlstädt, M.; Lee, S.; Mastroianni, S.; Mundt, L.E.; Mundus, M.; Reichel, C.; Richter, A.; Veit, C.; Wienands, K.; Würfel, U.; Veurman, W.; Glunz, S.W.; Hermle, M.; Goldschmidt, J.C.
Journal Article, Conference Paper
2017Luminescence spectroscopy and thin-film interference effects in organic solar cells
List, M.; Reinhardt, Y.J.; Würfel, U.
Presentation
2017Novel low-temperature process for perovskite solar cells with a mesoporous TiO2 scaffold
Schulze, P.S.C.; Bett, A.J.; Winkler, K.; Hinsch, A.; Lee, S.; Mastroianni, S.; Mundt, L.E.; Mundus, M.; Würfel, U.; Glunz, S.W.; Hermle, M.; Goldschmidt, J.C.
Journal Article
2017On the impact of contact selectivity and charge transport on the open-circuit voltage of organic solar cells
Spies, A.; List, M.; Sarkar, T.; Würfel, U.
Journal Article
2017Organic solar cells: Extraction of physical parameters by means of markov chain Monte Carlo techniques
Raba, A.; Leroy, Y.; Kohlstädt, M.; Würfel, U.; Cordan, A.-S.
Journal Article
2017Positive side of disorder: Statistical fluorene-carbazole-TTBTBTT terpolymers show improved optoelectronic and photovoltaic properties compared to the regioregular structures
Akkuratov, A.; Mühlbach, S.; Susarova, D.K.; Seßler, M.; Zimmermann, B.; Razumov, V.F.; Würfel, U.; Troshin, P.A.
Journal Article
2017Spectrally resolved nonlinearity and temperature dependence of perovskite solar cells
Mundus, M.; Venkataramanachar, B.; Gehlhaar, R.; Kohlstädt, M.; Niesen, B.; Qiu, W.; Herterich, J.P.; Sahli, F.; Bräuninger, M.; Werner, J.; Hohl-Ebinger, J.; Uytterhoeven, G.; Würfel, U.; Ballif, C.; Schubert, M.C.; Warta, W.; Glunz, S.W.
Journal Article
2017Towards Perovskite Silicon Tandem Solar Cells with Optimized Optical Properties
Goldschmidt, J.G.; Bett, A.J.; Schulze, P.S.C.; Tucher, N.; Bivour, M.; Kohlstädt, M.; Lee, S.; Mastroianni, S.; Mundt, L.; Mundus, M.; Ndione, P.; Wienands, K.; Winkler, K.; Würfel, U.; Hermle, M.; Glunz, S.W.
Conference Paper
2016Characterization of perovskite solar cells: Towards a reliable measurement protocol
Zimmermann, E.; Wong, K.K.; Müller, M.; Hu, H.; Ehrenreich, P.; Kohlstädt, M.; Würfel, U.; Mastroianni, S.; Mathiazhagan, G.; Hinsch, A.; Gujar, T.P.; Thelakkat, M.; Pfadler, T.; Schmidt-Mende, L.
Journal Article
2016Charge carrier selectivity for contacts for organic solar cells
Spies, A.; List, M.; Sarkar, T.; Würfel, U.
Abstract
2016How molecules with dipole moments enhance the selectivity of electrodes in organic solar cells - a combined experimental and theoretical approach
Würfel, U.; Seßler, M.; Unmüßig, M.; Hofmann, N.; List, M.; Mankel, E.; Mayer, T.; Reiter, G.; Bubendorff, J.-L.; Simon, L.; Kohlstädt, M.
Journal Article
2016Impact of charge carrier transport and electrode selectivity on the performance of (organic) solar cells
Würfel, U.; Spies, A.; List, M.; Kohlstädt, M.
Presentation
2016Impact of charge carrier transport and electrode selectivity on the performance of organic solar cells
Würfel, U.; Spies, A.; List, M.; Kohlstädt, M.
Presentation
2016Laser patterning of vacuum processed small molecular weight organic photovoltaics
Röttinger, S.; Schwarz, B.; Schäfer, S.; Gauch, R.; Zimmermann, B.; Würfel, U.
Journal Article
2016Monolithic perovskite silicon tandem solar cells with advanced optics
Goldschmidt, J.C.; Bett, A.J.; Bivour, M.; Bläsi, B.; Eisenlohr, J.; Kohlstädt, M.; Lee, S.; Mastroianni, S.; Mundt, L.; Mundus, M.; Ndione, P.; Reichel, C.; Schubert, M.; Schulze, P.S.C.; Tucher, N.; Veit, C.; Veurman, W.; Wienands, K.; Winkler, K.; Würfel, U.; Glunz, S.W.; Hermle, M.
Conference Paper
2015Analysing the effect of crystal size and structure in highly efficient CH3NH3Pbl3 perovskite solar cells by spatially resolved photo- and electroluminescence imaging
Mastroianni, S.; Heinz, F.D.; Im, J.-H.; Veurman, W.; Padilla, M.; Schubert, M.C.; Würfel, U.; Grätzel, M.; Park, N.-G.; Hinsch, A.
Journal Article
2015Charge carrier separation in solar cells
Würfel, U.; Cuevas, A.; Würfel, P.
Journal Article
2015Comparative indoor and outdoor degradation of organic photovoltaic cells via inter-laboratory collaboration
Owens, C.; Ferguson, G.M.; Hermenau, M.; Voroshazi, E.; Galagan, Y.; Zimmermann, B.; Rösch, R.; Angamo, D.; Teran, G.; Uhrich, C.; Andriessen, R.; Hoppe, H.; Würfel, U.; Lira-Cantu, M.; Krebs, F.; Tanenbaum, D.
Conference Paper
2015Determining the photocurrent of individual cells within an organic solar module by LBIC and the filtering approach: Experiments and simulations
Reinhardt, J.; Apilo, P.; Zimmermann, B.; Rousu, S.; Würfel, U.
Journal Article
2015Ethanedithiol treatment of solution-processed ZnO thin films: Controlling the intragap states of electron transporting interlayers for efficient and stable inverted organic photovoltaics
Bai, S.; Jin, Y.; Liang, X.; Ye, Z.; Wu, Z.; Sun, B.; Ma, Z.; Tang, Z.; Wang, J.; Würfel, U.; Gao, F.; Zhang, F.
Journal Article
2015Impact of charge transport on current-voltage characteristics and power-conversion efficiency of organic solar cells
Würfel, U.; Neher, D.; Spies, A.; Albrecht, S.
Journal Article
2015Input energy
Mateu, L.; Kaal, W.; Müller, M.F.; Zimmermann, B.; Würfel, U.
Book Article
2015Layout flexibility for sheet-to-sheet produced flexible ITO-free organic solar modules with organic functional layers slot die coated under ambient atmospheric conditions
Kaduwal, D.; Schleiermacher, H.-F.; Schulz-Gericke, J.; Schiefer, S.; Liang Tan, Y.; Zhang, J.; Zimmermann, B.; Würfel, U.
Journal Article
2015Ordering of PCDTBT revealed by time-resolved electron paramagnetic resonance spectroscopy of its triplet excitons
Biskup, T.; Sommer, M.; Rein, S.; Meyer, D.L.; Kohlstädt, M.; Würfel, U.; Weber, S.
Journal Article
2015Solar cells
Müller, M.F.; Zimmermann, B.; Würfel, U.
Book Article
2015Towards continuous junction (CJ) organic electronic devices: Fast and clean post-polymerization modification by oxidation using dimethyldioxirane (DMDO)
Glöcklhofer, F.; Lumpi, D.; Kohlstädt, M.; Yurchenko, O.; Würfel, U.; Fröhlich, J.
Journal Article
2014Analysis of the degradation mechanism of ITO-free organic solar cells under UV radiation
Sapkota, S.B.; Fischer, M.; Zimmermann, B.; Würfel, U.
Journal Article
2014Applicability of the suns-Voc method on organic solar cells
Schiefer, S.; Zimmermann, B.; Glunz, S.W.; Würfel, U.
Journal Article
2014Circuital model validation for S-shaped organic solar cells by means of impedance spectroscopy
Romero, B.; Pozo, G. del; Arredondo, B.; Reinhardt, J.; Sessler, M.; Würfel, U.
Journal Article
2014Determination of the intrinsic and the injection dependent charge carrier density in organic solar cells using the suns-VOC method
Schiefer, S.; Zimmermann, B.; Würfel, U.
Journal Article
2014Identifying the impact of surface recombination at electrodes in organic solar cells by means of electroluminescence and modeling
Reinhardt, J.; Grein, M.; Bühler, C.; Schubert, M.; Würfel, U.
Journal Article
2014Impedance spectroscopy analysis of small molecule solution processed organic solar cell
Arredondo, B.; Romero, B.; Pozo, G. del; Sessler, M.; Veit, C.; Würfel, U.
Journal Article
2014Influence of the acceptor on electrical perfomance and charge carrier transport in bulk heterojunction solar cells with HXS-1
Ahme, H.; Lee, M.; Im, C.; Würfel, U.
Journal Article
2014ITO-free laminated concept for flexible organic solar cells
Kaduwal, D.; Zimmermann, B.; Würfel, U.
Journal Article
2014ITO-free organic solar cells with roll-to-roll coated organic functional layers from non-halogenated solvents
Kaduwal, D.; Schleiermacher, H.-F.; Schulz-Gericke, J.; Kroyer, T.; Zimmermann, B.; Würfel, U.
Journal Article
2014Promising long-term stability of encapsulated ITO-free bulk-heterojunction organic solar cells under different aging conditions
Sapkota, S.B.; Spies, A.; Zimmermann, B.; Dürr, I.; Würfel, U.
Journal Article
2014Round robin performance testing of organic photovoltaic devices
Gevorgyan, S.A.; Zubillaga, O.; Seoane, J.M.V. de; Machado, M.; Parlak, E.A.; Tore, N.; Voroshazi, E.; Aernouts, T.; Müllejans, H.; Bardizza, G.; Taylor, N.; Verhees, W.; Kroon, J.M.; Morvillo, P.; Minarini, C.; Roca, F.; Castro, F.A.; Cros, S.; Lechene, B.; Trigo, J.F.; Guillen, C.; Herrero, J.; Zimmermann, B.; Sapkota, S.B.; Veit, C.; Würfel, U.; Tuladhar, P.S.; Durrant, J.R.; Winter, S.; Rousu, S.; Välimäki, M.; Hinrichs, V.; Cowan, S.R.; Olson, D.C.; Sommer-Larsen, P.; Krebs, F.C.
Journal Article
2014Systematic variation of the stabilizer to reduce the annealing temperature of sol-gel derived titanium oxide in inverted organic solar cells
Seßler, M.; Kohlstädt, M.; Saeed, A.; Würfel, U.
Journal Article
2013High yield fabrication of vertical interdigital electrodes with sub micrometer distance and their application in an organic photovoltaic device
Stelzl, F.; Schulz-Gericke, J.; Niggemann, M.; Würfel, U.
Journal Article
2013Inverted ITO- and PEDOT:PSS-free polymer solar cells with high power conversion efficiency
Kohlstädt, M.; Grein, M.; Reinecke, P.; Kroyer, T.; Zimmermann, B.; Würfel, U.
Journal Article
2013Layout optimization of organic wrap through solar cells by comined electrical and optical modeling
Schiefer, S.; Zimmermann, B.; Würfel, U.
Journal Article
2013Numerical power balance and free energy loss analysis for solar cells including optical, thermodynamic, and electrical aspects
Greulich, J.; Höffler, H.; Würfel, U.; Rein, S.
Journal Article
2013Performance of ITO-free inverted organic bulk heterojunction photodetectors: Comparison with standard device architecture
Arredondo, B.; Dios C. de; Vergaz, R.; Criado, A.R.; Romero, B.; Zimmermann, B.; Würfel, U.
Journal Article
2013The physical meaning of charge extraction by linearly increasing voltage transients from organic solar cells
Hanfland, R.; Fischer, M.; Brütting, W.; Würfel, U.; MacKenzie, R.C.I.
Journal Article
2012Aerosol jet printed grid for ITO-free inverted organic solar cells
Kopola, P.; Zimmermann, B.; Filipovic, A.; Schleiermacher, H.F.; Greulich, J.; Rousu, S.; Hast, J.; Myllylä, R.; Würfel, U.
Journal Article
2012Combined characterization techniques to understand the stability of a variety of organic photovoltaic devices - The ISOS-3 interlaboratory collaboration
Lira-Cantu, M.; Tanenbaum, D.M.; Norrman, K.; Voroshazi, E.; Hermenau, M.; Lloyd, M.T.; Teran-Escobar, G.; Galagan, Y.; Zimmermann, B.; Hösel, M.; Dam, H.F.; Jørgensen, M.; Gevorgyan, S.; Lutsen, L.; Vanderzande, D.; Hoppe, H.; Rösch, R.; Würfel, U.; Andriessen, R.; Rivaton, A.; Uzunoglu, G.Y.; Germack, D.; Andreasen, B.; Madsen, M.V.; Bundgaard, E.; Krebs, F.C.
Conference Paper