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The dependence of grain boundary (GB) space-charge potential barrier height (qVg), effective diffusion length of minority carriers L*n, and the efficiency of polycrystalline silicon (PX-Si) solar cells on grain size is studied theoretically. The computations are done by considering Gaussian energy distribution for GB interface states. It is observed that a good agreement between the theoretical results...
In this paper, we present a model for the 2D numerical simulation of polycrystalline silicon solar cells. This model assumes a columnar structure of grain boundaries and a preferential diffusion of dopants formed along grain boundaries during the emitter step process. The simulation results of IQE and I-V parameters are compared to experimental data obtained on n/sup +/pp/sup +/ polycrystalline Si...
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