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 simulators solve reaction-diffusion equations for the defect states in time-space domain self-consistently with the free carrier transport. Results of 1-D and 2-D simulations have been compared to verify the accuracy of solutions.

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@article{Guo2015DiffusionreactionMO, title={Diffusion-reaction modeling of Cu migration in CdTe solar devices}, author={D. Guo and Daniel Brinkman and Tianyu Fang and Richard Akis and I A Sankin and Dragica Vasileska and Christian A. Ringhofer}, journal={2015 International Workshop on Computational Electronics (IWCE)}, year={2015}, pages={1-2} }