Reducing non‐radiative recombination is key to achieve high fill factors (FFs) in organic
solar cells. While it is generally accepted that recombination proceeds via charge transfer …

This review gives a simple and pedagogical introduction to the field of materials and their
modelling for the active layer in organic photovoltaic devices. It gives a perspective on past …

Over the past years, highly efficient conjugated polymers and small molecules have led to
the development of organic photovoltaics (OPVs) as a promising alternative to conventional …

Developing devices using disordered organic semiconductors requires accurate and
practical models of charge transport. In these materials, charge transport occurs through …

Suppressing charge recombination is key for organic solar cells to become commercial
reality. However, there is still no conclusive picture of how recombination losses are …

Among the parameters determining the efficiency of an organic solar cell, the open-circuit
voltage (V OC) is the one with most room for improvement. Existing models for the …

The photon energy dependence of long-range charge separation is studied for two
prototypical polymer: fullerene systems. The internal quantum efficiency (IQE) of PCDTBT …

Mixing a third compound into the active layer of an organic bulk heterojunction solar cell to
form a ternary system has become an established way to improve performance. Various …

State-of-the-art organic solar cells exhibit power conversion efficiencies of 18% and above.
These devices benefit from the suppression of free charge recombination with regard to the …

Due to their efficient molecular design, nonfullerene acceptors (NFAs) have significantly
advanced organic photovoltaics (OPVs). However, the lack of models to screen and …