Auflistung nach Schlagwort "Nanostructured materials"

Auflistung nach Schlagwort "Nanostructured materials"

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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 ...
  • Lateral manipulation of single adsorbates and substrate atoms with the scanning tunneling microscope 
    Meyer, G.; Rieder, K.H. (Cambridge : Cambridge University Press, 1998)
    The stability and precision of modern scanning-tunneling-microscope (STM) systems allow positioning of the tip on a subnanometer scale. This advancement has stimulated diverse efforts on surface modifications in the nanometer ...
  • 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 ...
  • Nanocrystalline versus microcrystalline Lo2O:B2O 3 composites: Anomalous ionic conductivities and percolation theory 
    Indris, Sylvio; Heitjans, Paul; Roman, H. Eduardo; Bunde, Armin (College Park, ML : American Physical Society, 2000)
    We study ionic transport in nano- and microcrystalline (1−x)Li2O:xB2O3 composites using standard impedance spectroscopy. In the nanocrystalline samples (average grain size of about 20 nm), the ionic conductivity σdc increases ...
  • Properties and structure of magnetic alkali-borosilicate glasses prepared by induction melting 
    Naberezhnov, A.; Nacke, B.; Nikanorov, A.; Koroleva, E.; Vanina, P.; Alekseeva, O.; Tomkovich, M.; Andreeva, N. (Bristol : Institute of Physics Publishing, 2018)
    In this contribution we present the first results devoted to studies of structure, morphology and magnetic properties of magnetic alkali-borosilicate glasses prepared by induction melting. This procedure permits to fabricate ...
  • Solar cell emitter design with PV-tailored implantation 
    Ohrdes, Tobias; Steingrube, S.; Wagner, Hannes; Zechner, C.; Letay, G.; Chen, R.; Dunham, S.T.; Altermatt, Pietro 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 ...
  • Switchable nanometer contacts: Ultrathin Ag nanostructures on Si(100) 
    Gardinowski, G.; Schmeidel, J.; Pfnür, Herbert; Block, T.; Tegenkamp, Christoph (College Park, MD : American Institute of Physics, 2006)
    The fabrication and characterization of metallic nanometer-sized gaps suitable for conductivity measurements of single molecules were studied. Controlled gap formation by electromigration (EM) is demonstrated in contiguous ...
  • Thermomechanical deformations in photovoltaic laminates 
    Paggi, M.; Kajari-Schröder, S.; Eitner, U. (London : SAGE Publications Ltd., 2011)
    Recent experimental results based on the digital image correlation technique (U. Eitner, M. Köntges, R. Brendel, Solar Energy Mater. Solar Cells, 2010, 94, 1346-1351) show that the gap between solar cells embedded into a ...