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Keywords:

  • optical optimization;
  • polymer solar cells;
  • BCP;
  • PTB7;
  • PBDTTT-C
Thumbnail image of graphical abstract

In the multilayer architecture of a polymer solar cell, Martínez-Otero, J. Martorell, and co-workers introduce a highly transparent material as a buffer layer which enhances the reflectivity of the solar device. On page 37, they describe how this results in an optimal optical field distribution to increase light harvesting by the absorber layer, which maximizes the conversion of sun photons into electrical charges by the photovoltaic device.