Computer modelling of current matching in a-Si:H/a-Si:H-tandem solar cells on textured TCO substrates

Zeman, M.
July 1997

Fuel and Energy Abstracts, vol 38-4, p. 244

The title cells were optimized using computer modelling on textured substrate in order to achieve current matching between the top and bottom cell. A multi-rough-interface optical model which was used for calculating the absorption profiles in the tandem cells is introduced. In order to simulate multi-junction solar cell as a complete device we implemented a novel model for tunnel/recombination junction (TRJ) is presented. The influence of light scattering and thickness of the intrinsic layer of the bottom cell on the optimal ratio between the thicknesses of the bottom (i2) and top (i1) intrinsic layers in the current-matched cell. The simulation results are reported.

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