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Yayınlanmış 1 Ocak 2020 | Sürüm v1
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A European proficiency test on thin-film tandem photovoltaic devices

Oluşturanlar

  • 1. European Commiss, Joint Res Ctr JRC, Ispra, Italy
  • 2. Forschungszentrum Julich, IEK5, Julich, Germany
  • 3. Tech Univ Denmark DTU, Dept Energy Convers & Storage, Roskilde, Denmark
  • 4. Loughborough Univ, Ctr Renewable Energy Syst Technol CREST, Loughborough, Leics, England
  • 5. TUBITAK Marmara Res Ctr, Mat Inst, Kocaeli, Turkey
  • 6. Austrian Inst Technol AIT, Vienna, Austria
  • 7. Univ Milano Bicocca UNIMIB, Solar Energy Res Ctr MIB SOLAR, Milan, Italy
  • 8. Ctr Solar Energy & Hydrogen Res Baden Wurttemberg, Stuttgart, Germany
  • 9. Netherlands Org Appl Sci Res TNO, Petten, Netherlands
  • 10. Commissariat Energie Atom Energies Alternat CEA I, Le Bourget Du Lac, France
  • 11. Italian Natl Agcy New Technol Energy & Sustainabl, Port Res Ctr, Portici, Italy

Açıklama

A round-robin proficiency test (RR PT) on thin-film multi-junction (MJ) photovoltaic (PV) cells was run between 13 laboratories within the European project CHEETAH. Five encapsulated PV cells were circulated to participants for being tested at Standard Test Conditions (STC). Three cells were a-Si/mu c-Si tandem PV devices, each of which had a different short-circuit current ratio between the top junction and the bottom one; the remaining two cells were single-junction PV devices made with material representative of the individual junctions in the MJ cells. The RR PT's main purpose was to assess the capability of the participating laboratories, in terms of employed facilities and procedures, to test MJ PV devices. Therefore, participants were requested to perform STC measurements of all cells according to their own procedure, which might not include external quantum efficiency measurements. The European Solar Test Installation (ESTI) of the Joint Research Centre (JRC) provided the reference calibrations against which the participants' results are compared. ESTI made also a verification of the cells performance at STC at the end of the RR PT, in order to allow a comparison between the initial stable state at which the cells were calibrated (just before circulation) and the one they had reached at the end of the RR PT. The overall results of the RR PT are here presented and discussed together with some aspects of MJ PV testing that emerged as not adequately applied or largely missing. Their full implementation is expected to improve the consistency of future results.

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