Direct Analysis of JV-Curves Applied to an Outdoor-Degrading CdTe Module (Presentation): NREL (National Renewable Energy Laboratory)

Dirk Jordan, Sarah Kurtz, Carolin Ulbrich, Andreas Gerber, Uwe Rau

Research output: NRELPresentation

Abstract

We present the application of a phenomenological four parameter equation to fit and analyze regularly measured current density-voltage JV curves of a CdTe module during 2.5 years of outdoor operation. The parameters are physically meaningful, i.e. the short circuit current density Jsc, open circuit voltage Voc and differential resistances Rsc, and Roc. For the chosen module, the fill factor FF degradation overweighs the degradation of Jsc and Voc. Interestingly, with outdoor exposure, not only the conductance at short circuit, Gsc, increases but also the Gsc(Jsc)-dependence. This is well explained with an increase in voltage dependent charge carrier collection in CdTe.
Original languageAmerican English
Number of pages27
StatePublished - 2014

Publication series

NamePresented at the PV Module Reliability Workshop, 25-26 February 2014, Golden, Colorado

NREL Publication Number

  • NREL/PR-5200-61450

Keywords

  • CdTe module
  • degrading
  • direct analysis
  • JV-curves
  • outdoor
  • parameter equation
  • phenomenological

Fingerprint

Dive into the research topics of 'Direct Analysis of JV-Curves Applied to an Outdoor-Degrading CdTe Module (Presentation): NREL (National Renewable Energy Laboratory)'. Together they form a unique fingerprint.

Cite this