Progress Toward a Stabilization and Preconditioning Protocol for Polycrystalline Thin-Film Photovoltaic Modules

Joseph A. Del Cueto, Chris A. Deline, Steve R. Rummel, Allan Anderberg

Research output: Contribution to conferencePaperpeer-review

15 Scopus Citations

Abstract

Cadmium telluride (CdTe) and copper indium gallium diselenide (CIGS) thin-film photovoltaic (PV) modules can exhibit substantial variation in measured performance depending on prior exposure history. We studied the metastable performance changes in these PV modules with the goal of establishing standard preconditioning or stabilization exposure procedures to mitigate measured variations prior to current-voltage (IV) measurements. We present the results of our case studies of module performance vs. exposure: light-soaked at 65°C, exposed in the dark under forward bias at 65°C; and finally longerterm outdoor exposure. We find that stabilization can be achieved using either light or dark bias methods. Additionally, we performed and present capacitancevoltage profile measurements on the modules to examine the changes in depletion widths or its hysteresis plus electronic carrier concentrations as a function of exposure.

Original languageAmerican English
Pages2423-2428
Number of pages6
DOIs
StatePublished - 2010
Event35th IEEE Photovoltaic Specialists Conference, PVSC 2010 - Honolulu, HI, United States
Duration: 20 Jun 201025 Jun 2010

Conference

Conference35th IEEE Photovoltaic Specialists Conference, PVSC 2010
Country/TerritoryUnited States
CityHonolulu, HI
Period20/06/1025/06/10

NREL Publication Number

  • NREL/CP-520-49949

Keywords

  • measured performance
  • procedures protocol
  • thin-film photovoltaic modules

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