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  • 24.30.−V  (1)
  • 84.60.Jt  (1)
  • 1
    Digitale Medien
    Digitale Medien
    New stable microwave plasma passivated a-Si MIS cells with high open circuit voltage (1988)
    Springer
    Applied physics 46 (1988), S. 31-34 
    Details
    ISSN: 1432-0630
    Schlagwort(e): 81.60.-j ; 72.80.Ng ; 84.60.Jt
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract A new microwave plasma surface passivation technique has been applied to a-Si∶H type solar cells at various low pressure O2 and H2O atmospheres. Open circuit voltageV OC close to 900 mV and in excess of 900 mV are obtained with Ir, and with Pt, respectively, as continuous barrier metals. The corresponding unpassivated cells (Schottky type solar cells) show considerably lower values ofV OC=650 mV. In contrast to published results involving Ni, Pd, Zr, and other metals as Schottky barriers, we have observed over a period of several months a remarkably good stability of the passivated devices.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00615134
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Experimental study onp-wave neutron strength functions for light nuclei (1988)
    Springer
    The European physical journal 330 (1988), S. 387-395 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 24.30.−V
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Broad energy distributions in fast neutron beams have been achieved by appropriate filtering of the236U fission radiation provided from the RENT converter facility at the FRM research reactor. Transmission measurements in such beams result in average cross sections to which resonance reactions and shape elastic scattering contribute. We used a silicon (124.5 cm) filtered beam with a median energy of 143 keV (width 20 keV) and beams with 1.3 MeV (0.55 to 3 MeV) and 2.1 MeV (1 to 5.5 MeV) obtained through different filter combinations of lead and polyethylene. The relative high energies and the broad spectra made it possible to determine experimentally the contributions ofs- andp-wave resonance reactions to the average cross section even for light nuclei. Using the three different beams we determined the average cross sections for the elements in the mass regionA=9 to 65. Analysing the measured cross sections by means of theR matrix formalism provided a complete set ofp-wave strength functions and distant level parameters. Moreover, single particle shell effects in the cross sections were observed. In conclusion we obtained informations on the 2P and the 3S size resonances and about the validity of the optical model for neutron reactions with light nuclei.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01290124
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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