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Title: Diffusion-Reaction Modeling of Cu Migration in CdTe Solar Devices

In this work, we report on development of one-dimensional (1D) finite-difference and two-dimensional (2D) finite-element diffusion-reaction simulators to investigate mechanisms behind Cu-related metastabilities observed in CdTe solar cells [1]. The evolution of CdTe solar cells performance has been studied as a function of stress time in response to the evolution of associated acceptor and donor states. To achieve such capability, the simu-lators solve reaction-diffusion equations for the defect states in time-space domain self-consistently with the free carrier transport. Re-sults of 1-D and 2-D simulations have been compared to verify the accuracy of solutions.
 [1] ;  [1] ;  [2] ;  [1] ;  [2] ;  [1] ;  [1]
  1. Arizona State Univ., Tempe, AZ (United States)
  2. First Solar Inc.
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Conference: IWCE 2015 (West Lafayette, IN, 2015)
Research Org:
Arizona State University
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Country of Publication:
United States