Auflistung nach Schlagwort "Silicon solar cells"

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  • Advances in the surface passivation of silicon solar cells 
    Schmidt, Jan; Werner, Florian; Veith, Boris; Zielke, Dimitri; Steingrube, S.; Altermatt, Pietro P.; Gatz, Sebastian; Dullweber, Thorsten; Brendel, Rolf (Amsterdam : Elsevier BV, 2012)
    The surface passivation properties of aluminium oxide (Al 2O 3) on crystalline Si are compared with the traditional passivation system of silicon nitride (SiN x). It is shown that Al 2O 3 has fundamental advantages over ...
  • Analysis of local Al-doped back surface fields for high efficiency screen-printed solar cells 
    Gatz, Sebastian; Bothe, Karsten; Müller, Jens; Dullweber, Thorsten; 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 ...
  • Atmospheric components and dopant carry-over influence during laser ablation 
    Schütz, Viktor; Haupt, Oliver; Stute, Uwe (London : Elsevier Ltd., 2011)
    In order to improve the efficiency of multi-crystalline (mc)-silicon solar cells, laser ablation as a non-contact tool is highly suitable for various processes. Apart from the laser and scanning parameters frequently ...
  • Demonstrating the high Voc potential of PEDOT:PSS/c-Si heterojunctions on solar cells 
    Gogolin, Ralf; Zielke, D.; Descoeudres, A.; Despeisse, M.; Ballif, C.; Schmidt, J. (London : Elsevier Ltd., 2017)
    In this study, we demonstrate the high surface passivation quality of PEDOT:PSS/c-Si junctions for the first time on solar cell level, reaching a record high Voc value of 688 mV after full-area metallization of the PEDOT:PSS. ...
  • Determination of the collection diffusion length by electroluminescence imaging 
    Schinke, Carsten; Hinken, David; Bothe, Karsten; Ulzhöfer, Christian; Milsted, Ashley; 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 ...
  • Determination of the Contact Resistivity of Screen-printed Al Contacts Formed by Laser Contact Opening 
    Kranz, Christopher; Lim, Bianca; Baumann, Ulrike; Dullweber, Thorsten (London : Elsevier Ltd., 2015)
    Next-generation industrial PERC solar cells typically include local laser contact opening (LCO) of a dielectric passivation layer stack at the rear side and subsequent full-area aluminum screen printing and firing. In this ...
  • Effective passivation of crystalline silicon surfaces by ultrathin atomic-layer-deposited TiOx layers 
    Titova, V.; Veith-Wolf, B.; Startsev, D.; Schmidt, J. (London : Elsevier Ltd., 2017)
    We characterize the surface passivation properties of ultrathin titanium oxide (TiOx) films deposited by atomic layer deposition (ALD) on crystalline silicon by means of carrier lifetime measurements. We compare different ...
  • Experimental setup for camera-based measurements of electrically and optically stimulated luminescence of silicon solar cells and wafers 
    Hinken, David; Schinke, Carsten; Herlufsen, Sandra; Schmidt, Arne; Bothe, Karsten; Brendel, Rolf (College Park, MD : American Institute of Physics, 2011)
    We report in detail on the luminescence imaging setup developed within the last years in our laboratory. In this setup, the luminescence emission of silicon solar cells or silicon wafers is analyzed quantitatively. Charge ...
  • Fundamental consideration of junction formation strategies for phosphorus-doped emitters with J0e < 10 fA/cm2 
    Min, Byungsul; Krügener, Jan; Müller, Matthias; Bothe, Karsten; Brendel, Rolf (London : Elsevier Ltd., 2017)
    This work shows the potential of further optimization of phosphorus-doped emitters in p-type silicon solar cells. We investigate the impact of different combinations of phosphorus doping profiles and surface passivation ...
  • Hierarchical Etching for Improved Optical Front-side Properties of Monocrystalline Si Solar Cells 
    Heinemeyer, Frank; Steckenreiter, Verena; Kiefer, Fabian; Peibst, Robby (London : Elsevier Ltd., 2015)
    We investigate a hierarchical surface structuring process to reduce the optical reflectance of monocrystalline Si solar cells to below the reflectance of state-of-the-art alkaline texturing. First, alkaline texturing is ...
  • High-rate atomic layer deposition of Al2O3 for the surface passivation of Si solar cells 
    Werner, Florian; Stals, Walter; Görtzen, Roger; Veith, Boris; 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 ...
  • Implementation of full-area-deposited electron-selective TiOx layers into silicon solar cells 
    Titova, Valeriya; Schmidt, Jan (College Park, MD : American Institute of Physics, 2018)
    We examine two different silicon solar cell designs featuring full-area electron-selective contacts based on ultrathin (2-3 nm) titanium oxide (TiOx) films deposited by atomic layer deposition. The first cell design applies ...
  • Ion-implanted PERC solar cells with Al2O3/SiN x rear passivation 
    Dullweber, Thorsten; Hesse, Rene; Bhosle, Vikram; Dubé, Chris (London : Elsevier Ltd., 2013)
    Ion implantation is an attractive candidate for PERC solar cells due to the single-sided emitter phosphorus doping. The oxide, which is formed during the implant anneal, can be used as rear passivation of PERC cells. ...
  • ITO-free metallization for interdigitated back contact silicon heterojunction solar cells 
    Stang, Johann-Christoph; Hendrichs, Max-Sebastian; Merkle, Agnes; Peibst, Robby; Stannowski, Bernd; Korte, Lars; Rech, Bernd (London : Elsevier Ltd., 2017)
    We report on two different approaches to fabricate interdigitated back contact silicon heterojunction solar cells without using indium tin oxide (ITO). The standard ITO/Ag backend is either modified by replacing ITO with ...
  • Kerfless exfoliated thin crystalline Si wafers with Al metallization layers for solar cells 
    Niepelt, Raphael; Hensen, Jan; Steckenreiter, Verena; Brendel, Rolf; Kajari-Schröder, Sarah (Cambridge : Cambridge University Press, 2015)
    We report on a kerfless exfoliation approach to further reduce the costs of crystalline silicon photovoltaics making use of evaporated Al as a double functional layer. The Al serves as the stress inducing element to drive ...
  • Limitation of industrial phosphorus-diffused emitters by SRH recombination 
    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 ...
  • Loss analysis and improvements of industrially fabricated Cz-Si solar cells by means of process and device simulations 
    Steingrube, S.; Wagner, Hannes; Hannebauer, Helge; Gatz, Sebastian; Chen, R.; Dunham, S.T.; Dullweber, Thorsten; Altermatt, Pietro 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 ...
  • Luminescence emission from forward- and reverse-biased multicrystalline silicon solar cells 
    Bothe, Karsten; Ramspeck, K.; Hinken, D.; Schinke, Carsten; Schmidt, J.; Herlufsen, S.; Brendel, Rolf; Bauer, J.; Wagner, J.-M.; Zakharov, N.; Breitenstein, O. (College Park, MD : American Institute of Physics, 2009)
    We study the emission of light from industrial multicrystalline silicon solar cells under forward and reverse biases. Camera-based luminescence imaging techniques and dark lock-in thermography are used to gain information ...
  • Numerical modelling and validation of thermally-induced spalling 
    Berardone, Irene; Kajari-Schröder, Sarah; Niepelt, Raphael; Hensen, Jan; Steckenreiter, Verena; Paggi, Marco (London : Elsevier Ltd., 2015)
    In order to reduce the silicon consumption in the production of crystalline silicon solar cells, the improvement of sawing techniques or the use of a kerf-less process are possible solutions. This study focuses on a ...
  • Organic-silicon Solar Cells Exceeding 20% Efficiency 
    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 ...