Browse Fakultät für Mathematik und Physik by Dewey Decimal Classification

Browse Fakultät für Mathematik und Physik by Dewey Decimal Classification

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  • Kiefer, Fabian; Brendemühl, Till; Berger, Miriam; Lohse, Anja; Kirstein, Sabine; Braun, Nadja; Lehr, Martin; Heinemeyer, Frank; Jung, Verena; Morlier, Arnaud; Blankemeyer, Susanne; Kunze, Iris; Winter, Renate; Harder, Nils-Peter; Dullweber, Thorsten; Köntges, Marc; Brendel, Rolf (Amsterdam : Elsevier, 2013)
    The majority of screen printed solar cells has silver pads at the rear side to enable soldering for the module manufacturing. The pads increase the recombination at the silicon/metal interface due to the absence of a back ...
  • De Angelis, M.; Angonin, M.C.; Beaufils, Q.; Becker, C.; Bertoldi, A.; Bongs, Kai; Bourdel, T.; Bouyer, P.; Boyer, V.; Dörscher, S.; Duncker, H.; Ertmer, Wolfgang; Fernholz, T.; Fromhold, T.M.; Herr, Waldemar; Krüger, P.; Kürbis, C.; Mellor, C.J.; Pereira Dos Santos, F.; Peters, A.; Poli, N.; Popp, M.; Prevedelli, M.; Rasel, Ernst Maria; Rudolph, J.; Schreck, F.; Sengstock, K.; Sorrentino, F.; Stellmer, S.; Tino, G.M.; Valenzuela, T.; Wendrich, T.J.; Wicht, A.; Windpassinger, P.; Wolf, P. (Amsterdam : Elsevier BV, 2011)
    We present iSense, a recently initiated FET project aiming to use Information and Communication Technologies (ICT) to develop a platform for portable quantum sensors based on cold atoms. A prototype of backpack-size ...
  • Schulte-Huxel, Henning; Blankemeyer, Susanne; Steckenreiter, Verena; Kajari-Schröder, Sarah; Brendel, Rolf (Amsterdam : Elsevier, 2014)
    We demonstrate the laser welding of Al interconnects to the BSF rear-side of screen-printed two-side-contacted solar cells. The Al paste on the rear side of solar cell is laser-welded to an Al foil. This reduces the silver ...
  • Kajari-Schröder, Sarah; Käsewieter, Jörg; Hensen, Jan; Brendel, Rolf (Amsterdam : Elsevier, 2013)
    We discuss the lift-off of free-standing epitaxially grown silicon layers from the porous silicon (PSI) process, which is a kerfless wafering technology. The lift-off is a crucial step in the PSI cycle. A high-porosity ...
  • Min, Byungsul; Wagner, Hannes; Dastgheib-Shirazi, Amir; Altermatt, Pietro P. (Amsterdam : Elsevier, 2014)
    It is commonly assumed in the PV community that Auger recombination is the dominant loss mechanism in heavily phosphorusdoped emitters of industrial Si solar cells. Contrary to this assumption, we show in this work that ...
  • Schäfer, Sören; Ernst, Marco; Kajari-Schröder, Sarah; Brendel, Rolf (Amsterdam : Elsevier, 2013)
    Kerf-free techniques for subdividing a single thick crystalline Si wafer into a multitude of thin Si layers have a large potential for cost reductions. In this paper, we explore pore formation in Si for separating many 18 ...
  • Vogt, Malte R.; Holst, Hendrik; Winter, Matthias; Brendel, Rolf; Altermatt, Pietro P. (Amsterdam : Elsevier, 2015)
    Commonly, the thermal behavior of solar cell modules is calculated with analytical approaches using non wavelength-dependent optical data. Here, we employ ray tracing of entire solar modules at wavelengths of 300-2500 nm ...
  • Crisosto, Cristian; Hofmann, Martin; Mubarak, Riyad; Seckmeyer, Gumther (Basel : MDPI, 2018)
    We present a method to predict the global horizontal irradiance (GHI) one hour ahead in one-minute resolution using Artificial Neural Networks (ANNs). A feed-forward neural network with Levenberg–Marquardt Backpropagation ...
  • Zielke, Dimitri; Niehaves, Claudia; Lövenich, Wilfried; Elschner, Andreas; Hörteis, Matthias; Schmidt, Jan (Amsterdam : Elsevier, 2015)
    Aftera briefreview of therecent evolvement oforganic-silicon heterojunction solar cells,we present here our latest measurements of the saturation current densities (J0) and contact resistances (RC) of crystalline silicon ...
  • Mitchell, Bernhard; Wagner, Hannes; Altermatt, Pietro P.; Trupke, Thorsten (Amsterdam : Elsevier, 2013)
    We present a model for predicting the solar cell efficiency potential of multicrystalline silicon bricks prior to sawing. Three model inputs are required: bulk lifetime images from the side faces of the bricks, the cell ...
  • Winter, Matthias; Holst, Hendrik; Altermatt, Pietro P. (Amsterdam : Elsevier, 2013)
    Silicon solar cell modules, where the EVA layer is replaced by an air gap, are able to produce the same electric power as standard modules with EVA only if their anti-reflective properties are enhanced. We propose a method ...
  • Kim, Kyung Ho; Lara-Avila, Samuel; He, Hans; Kang, Hojin; Hong, Sung Ju; Park, Min; Eklöf, Johnas; Moth-Poulsen, Kasper; Matsushita, Satoshi; Akagi, Kazuo; Kubatkin, Sergey; Park, Yung Woo (London : Nature Publishing Group, 2018)
    Using magneto transport, we probe hopping length scales in the variable range hopping conduction of carbonized polyacetylene and polyaniline nanofibers. In contrast to pristine polyacetylene nanofibers that show vanishing ...
  • Hannebauer, Helge; Dullweber, Thorsten; Falcon, Tom; Chen, Xiao; Brendel, Rolf (Amsterdam : Elsevier, 2013)
    We investigate and compare three different fine line printing techniques for the silver front side metallization of industrial-type silicon solar cells: single print, dual print and print-on-print. We obtain finger heights ...
  • Dastgheib-Shirazi, Amir; Steyer, Michael; Micard, Gabriel; Wagner, Hannes; Altermatt, Pietro P.; Hahn, Giso (Amsterdam : Elsevier, 2013)
    The POCl3 diffusion process is still a common way to create the pn-junction of Si solar cells. Concerning the screen-printing process, it is necessary to find a compromise between low emitter recombination, low contact ...
  • Machida, Manan; Nakajima, Yasutaka; Torres-Mapa, Maria Leilani; Heinemann, Dag; Heisterkamp, Alexander; Terakawa, Mitsuhiro (London : Nature Publishing Group, 2018)
    The integration of metal microstructures and soft materials is promising for the realization of novel optical and biomedical devices owing to the flexibility and biocompatibility of the latter. Nevertheless, the fabrication ...
  • Ernst, Marco; Schulte-Huxel, Henning; Niepelt, Raphael; Kajari-Schröder, Sarah; Brendel, Rolf (Amsterdam : Elsevier, 2013)
    We separate a (34 ± 2) μm-thick macroporous Si layer from an n-type Si wafer by means of electrochemical etching. The porosity is p = (26.2 ± 2.4)%. We use ion implantation to selectively dope the outer surfaces of the ...
  • Antonopoulos, Georgios C.; Steltner, Benjamin; Heisterkamp, Alexander; Ripken, Tammo; Meyer, Heiko; Zhang, Heye (San Francisco : Public Library Science, 2015)
    A variety of physical and biomedical imaging techniques, such as digital holography, interferometric synthetic aperture radar (InSAR), or magnetic resonance imaging (MRI) enable measurement of the phase of a physical ...
  • Schulte-Huxel, Henning; Römer, Udo; Blankemeyer, Susanne; Merkle, Agnes; Larionova, Yevgeniya; Steckenreiter, Verena; Peibst, Robby; Kajari-Schröder, Sarah; Brendel, Rolf (Amsterdam : Elsevier, 2014)
    We present a module integration process for back junction back contact (BJBC) solar cells featuring point contacts to the back surface field (BSF). We apply two metallization layers. A first metal layer of aluminum is ...
  • Kranz, Christopher; Wyczanowski, Sabrina; Baumann, Ulrike; Weise, Katrin; Klein, Cornelia; Delahaye, Franck; Dullweber, Thorsten; Brendel, Rolf (Amsterdam : Elsevier, 2013)
    Industrial PERC cell process flows typically apply the polishing of the rear side after texturing as well as the edge isolation after POCl3 diffusion. In this paper, we present a novel single step polishing process which ...

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