Fakultät für Mathematik und Physik

 

Neueste Zugänge

  • Chomaz, L.; Baier, S.; Petter, D.; Mark, M.J.; Wächtler, F.; Santos, L.; Ferlaino, F. (College Park, MD : American Physical Society, 2016)
    In a joint experimental, theoretical effort, we report on the formation of a macrodroplet state in an ultracold bosonic gas of erbium atoms with strong dipolar interactions. By precise tuning of the s-wave scattering length ...
  • Abbott, B. P.; Vahlbruch, H.; Willke, B.; Wimmer, M.H.; Wittel, H. et al. (LIGO Scientific Collaboration and Virgo Collaboration) (College Park, MD : American Physical Society, 2016)
    The first observational run of the Advanced LIGO detectors, from September 12, 2015 to January 19, 2016, saw the first detections of gravitational waves from binary black hole mergers. In this paper, we present full results ...
  • Müller, J.; Bothe, K.; Gatz, S.; Plagwitz, H.; Schubert, G.; Brendel, Rolf (Amsterdam : Elsevier BV, 2011)
    The application of local aluminum (Al)-alloyed contacts to the p-type base of silicon solar cells reduces minority charge carrier recombination due to the formation of a local back surface field (LBSF). We study the ...
  • Ohrdes, T.; Steingrube, S.; Wagner, H.; Zechner, C.; Letay, G.; Chen, R.; Dunham, S.T.; Altermatt, P.P. (Amsterdam : Elsevier BV, 2011)
    A potentially cost-effective ion implanter for solar cells has become commercially available very recently. As the emitter dopant profiles differ from the standard diffusions, a combination of process simulation and device ...
  • Werner, F.; Stals, W.; Görtzen, R.; Veith, B.; Brendel, Rolf; Schmidt, Jan (Amsterdam : Elsevier BV, 2011)
    High-rate spatial atomic layer deposition (ALD) enables an industrially relevant deposition of high-quality aluminum oxide (Al2O3) films for the surface passivation of silicon solar cells. We demonstrate a homogeneous ...
  • Steingrube, S.; Wagner, H.; Hannebauer, H.; Gatz, S.; Chen, R.; Dunham, S.T.; Dullweber, T.; Altermatt, P.P.; Brendel, Rolf (Amsterdam : Elsevier BV, 2011)
    We model currently fabricated industrial-type screen-printed boron-doped Cz silicon solar cells using a combination of process and device simulations. The model reproduces the experimental results precisely and allows us ...
  • Haase, F.; Rojas, E.G.; Bothe, K.; Brendel, Rolf (Amsterdam : Elsevier BV, 2011)
    High efficiency solar cells require high generation and low recombination rates. High bulk lifetime, well passivated surfaces, and lowly doped thin emitters allow for low recombination rates. Thin passivated emitters should ...
  • Mader, C.; Bock, R.; Müller, J.; Schmidt, J.; Brendel, Rolf (Amsterdam : Elsevier BV, 2011)
    Locally aluminum-doped p-type silicon regions are formed by in-line high-rate evaporation of aluminum. We deposit aluminum layers of 28 μm thickness at dynamic deposition rates of 20 μm×m/min on locally laser-ablated Al2O3 ...
  • Veith, B.; Werner, F.; Zielke, D.; Brendel, Rolf; Schmidt, Jan (Amsterdam : Elsevier BV, 2011)
    We measure surface recombination velocities (SRVs) below 10 cm/s on low-resistivity (1.4 Ωcm) p-type crystalline silicon wafers passivated with plasma-assisted and thermal atomic layer deposited (ALD) aluminium oxide (Al2O3) ...
  • Schinke, C.; Hinken, D.; Bothe, K.; Ulzhöfer, C.; Milsted, A.; Schmidt, Jan; Brendel, Rolf (Amsterdam : Elsevier BV, 2011)
    The electroluminescence emission of crystalline silicon solar cells at near-bandgap wavelengths is investigated. We show that the intensity of the emitted luminescence at near-bandgap wavelengths is directly proportional ...
  • Gatz, S.; Bothe, K.; Müller, J.; Dullweber, T.; Brendel, Rolf (Amsterdam : Elsevier BV, 2011)
    In this paper, we investigate the surface recombination of local screen-printed aluminum contacts applied to rear passivated solar cells. We measure the surface recombination velocity by microwave-detected photoconductance ...
  • Markkanen, T.; Steinfeld, G.; Kljun, N.; Raasch, S.; Foken, T. (Göttingen : Copernicus GmbH, 2009)
    In this study we introduce a comparison method for footprint model results by evaluating the performance of conventional Lagrangian stochastic (LS) footprint models that use parameterised flow field characteristics with ...
  • Chamakhi, R.; Ahlers, H.; Telmini, M.; Schubert, C.; Rasel, E.M.; Gaaloul, N. (Bristol : Institute of Physics Publishing, 2015)
    Long-baseline precision tests based on atom interferometry require drastic control over the initial external degrees of freedom of atomic ensembles to reduce systematic effects. The use of optical lattices (OLs) is a highly ...
  • Tappe, Stefan (New York, NY : Hindawi Publishing Corporation, 2013)
    We present an alternative construction of the infinite dimensional Itô integral with respect to a Hilbert space valued Lévy process. This approach is based on the well-known theory of real-valued stochastic integration, ...
  • Tappe, Stefan (New York, NY : Hindawi Publishing Corporation, 2013)
    The goal of this review article is to provide a survey about the foundations of semilinear stochastic partial differential equations. In particular, we provide a detailed study of the concepts of strong, weak, and mild ...
  • Tappe, Stefan (Beachwood, OH : Institute of Mathematical Statistics, 2013)
    We prove the Yamada-Watanabe Theorem for semilinear stochastic partial differential equations with path-dependent coefficients. The so-called 'method of the moving frame' allows us to reduce the proof to the Yamada-Watanabe ...
  • Lehnert, Ralf (Basel : MDPI AG, 2016)
    One of the most fundamental symmetries in physics is CPT invariance. This article reviews the conditions under which CPT symmetry holds by recalling two proofs of the CPT theorem: The original Lagrangian-based analysis and ...
  • Ivanov, E.; Lechtenfeld, Olaf; Sidorov, S. (Heidelberg : Springer Verlag, 2016)
    We introduce a new kind of non-relativistic N = 8 supersymmetric mechanics, associated with worldline realizations of the supergroup SU(2|2) treated as a deformation of flat N = 8, d=1 supersymmetry. Various worldline ...
  • Hellmer, H.H.; Rhein, M.; Heinemann, G.; Abalichin, J.; Abouchami, W.; Baars, O.; Cubasch, U.; Dethloff, K.; Ebner, L.; Fahrbach, E.; Frank, M.; Gollan, G.; Greatbatch, R.J.; Grieger, J.; Gryanik, V.M.; Gryschka, Micha; Hauck, J.; Hoppema, M.; Huhn, O.; Kanzow, T.; Koch, B.P.; König-Langlo, G.; Langematz, U.; Leckebusch, G.C.; Lüpkes, C.; Paul, S.; Rinke, A.; Rost, B.; van, der, Loeff, M.R.; Schröder, M.; Seckmeyer, Gunther; Stichel, T.; Strass, V.; Timmermann, R.; Trimborn, S.; Ulbrich, U.; Venchiarutti, C.; Wacker, U.; Willmes, S.; Wolf-Gladrow, D. (Berlin : Springer, 2016)
    In the early 1980s, Germany started a new era of modern Antarctic research. The Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI) was founded and important research platforms such as the German ...
  • Rose, Daniel; Schmidt, M.; Steinbach, Marc C.; Willert, B.M. (Heidelberg : Springer Verlag, 2016)
    When considering cost-optimal operation of gas transport networks, compressor stations play the most important role. Proper modeling of these stations leads to nonconvex mixed-integer nonlinear optimization problems. In ...

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