Key points are not available for this paper at this time.
The conversion efficiencies of organic photovoltaic devices have been improved by a factor of 4–5 by introducing a large surface-area interface between the donor and acceptor layers. Stratified films of a fullerene-based acceptor (see Figure) were spin-coated on top of a donor (MDMO-PPV), forming a diffuse interface with unusual morphology that displayed high energy-conversion efficiencies.
Chen et al. (2000) studied this question.