Modeling Cu Migration in CdTe Solar Cells Under Device-Processing and Long-Term Stability Conditions: Preprint Metadata

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  • Main Title Modeling Cu Migration in CdTe Solar Cells Under Device-Processing and Long-Term Stability Conditions: Preprint


  • Author: Teeter, G.
    Creator Type: Personal
  • Author: Asher, S.
    Creator Type: Personal


  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization


  • Name: National Renewable Energy Laboratory (U.S.)
    Place of Publication: Golden, Colorado
    Additional Info: National Renewable Energy Laboratory (NREL), Golden, CO.


  • Creation: 2008-05-01


  • English


  • Content Description: An impurity migration model for systems with material interfaces is applied to Cu migration in CdTe solar cells. In the model, diffusion fluxes are calculated from the Cu chemical potential gradient. Inputs to the model include Cu diffusivities, solubilities, and segregation enthalpies in CdTe, CdS and contact materials. The model yields transient and equilibrium Cu distributions in CdTe devices during device processing and under field-deployed conditions. Preliminary results for Cu migration in CdTe photovoltaic devices using available diffusivity and solubility data from the literature show that Cu segregates in the CdS, a phenomenon that is commonly observed in devices after back-contact processing and/or stress conditions.
  • Physical Description: 8 p.


  • Keyword: Diffusion
  • Keyword: Pv
  • Keyword: Transients Pv
  • Keyword: Solar Cells
  • STI Subject Categories: 36 Materials Science
  • Keyword: Solar Energy - Photovoltaics
  • Keyword: Simulation
  • Keyword: Solubility
  • Keyword: Segregation
  • STI Subject Categories: 14 Solar Energy
  • Keyword: Device Processing
  • Keyword: Grain Boundary
  • Keyword: Thin Film
  • Keyword: Diffusion Flux
  • Keyword: Stability
  • Keyword: Migration Simulation
  • Keyword: Processing


  • Conference: Presented at the 33rd IEEE Photovoltaic Specialists Conference, 11-16 May 2008, San Diego, California


  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article


  • Text


  • Report No.: NREL/CP-520-42580
  • Grant Number: AC36-99-GO10337
  • Office of Scientific & Technical Information Report Number: 929632
  • Archival Resource Key: ark:/67531/metadc894139