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Keywords:

  • photovoltaic devices;
  • heterojunctions;
  • electron transport;
  • hole transport
Thumbnail image of graphical abstract

The introduction of a thin electronic sieve layer of a material with a wide bandgap, such as lithium fluoride (LiF) or silicon oxide (SiOx), at the inorganic-organic interface of an organic photovoltaic device enhances the charge separation and improves the efficiency by more than an order to a maximum of 6.04%.