Observation of reduced radiative recombination in low-well-number strain-balanced quantum well solar cells (Articolo in rivista)

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  • Observation of reduced radiative recombination in low-well-number strain-balanced quantum well solar cells (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.3284964 (literal)
Alternative label
  • A Bessière, JP Connolly, KWJ Barnham, MF Fuhrer, M Lynch, IM Ballard, M Mazzer, DC Johnson, G Hill, JS Roberts (2010)
    Observation of reduced radiative recombination in low-well-number strain-balanced quantum well solar cells
    in Journal of applied physics; AIP, American institute of physics, Melville, NY (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A Bessière, JP Connolly, KWJ Barnham, MF Fuhrer, M Lynch, IM Ballard, M Mazzer, DC Johnson, G Hill, JS Roberts (literal)
Pagina inizio
  • 044502-1 (literal)
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  • http://jap.aip.org/resource/1/japiau/v107/i4/p044502_s1 (literal)
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  • 107 (literal)
Rivista
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  • 4 (literal)
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  • 4 (literal)
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  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
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  • 1 Laboratoire de Chimie de la Matière Condensée de Paris, Chimie ParisTech, UMR-CNRS 7574, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05, France; 2 Nanophotonics Technology Center, Universidad Politécnica de Valencia, 46022 Valencia, Spain; 3 Imperial College London, Blackett Laboratory, Prince Consort Road, London SW7 2BW, United Kingdom; 4 Department of Electrical Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom; 5 CNR-IMEM, Parma, Italy (literal)
Titolo
  • Observation of reduced radiative recombination in low-well-number strain-balanced quantum well solar cells (literal)
Abstract
  • Absolute electroluminescence and photoluminescence measurements were carried out on strain-balanced quantum well solar cells. Over a range of bias, a reduced radiative recombination in the wells was observed compared to a model assuming a constant quasi-Fermi level separation (QFLS) over the device thickness. This was interpreted as a QFLS suppression in the wells relative to the bulk of 18 and 5 meV, respectively, for the single and five well strain-balanced quantum well solar cells, consistent with previous results on strained single quantum well and double quantum well devices. The photoluminescence spectra at open-circuit voltage under illumination in the well agreed with the electroluminescence spectra in the light in contrast to some theoretical predictions. Generation of hot carriers in the wells could be the thermodynamically compensating phenomenon for the QFLS reduction. (literal)
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