Understanding charge separation and charge transport at a molecular level is crucial for
improving the efficiency of organic photovoltaic (OPV) cells. Under illumination of Bulk …

The electronic structure and physical mechanisms of carrier generation and transport in the
organic bulk heterojunction are reviewed. The electronic structure describes the bands and …

The EPR spectra of paramagnetic species induced by photoexcitation typically exhibit
enhanced absorptive and emissive features resulting from sublevel populations that differ …

Exciton dissociation is a key step for the light energy conversion to electricity in organic
photovoltaic (OPV) devices. Here, excitonic dissociation pathways in the high‐performance …

Organic solar cells (OSCs) have recently shown a rapid improvement in their performance,
bringing power conversion efficiencies to above 18%. However, the open‐circuit voltage of …

Steve Albrecht, Koen Vandewal,* John R. Tumbleston, Florian SU Fischer, Jessica D.
Douglas, Jean MJ Fréchet, Sabine Ludwigs, Harald Ade, Alberto Salleo, and Dieter Neher …

Recently, much effort has been devoted to improve the efficiency of organic photovoltaic
solar cells based on blends of donors and acceptors molecules in bulk heterojunction …

Organic photovoltaics (OPV) is a promising technology to account for the increasing demand
for energy in form of electricity. Whereas the last decades have seen tremendous progress …

Transient EPR (trEPR) spectroscopy is a time-resolved detection technique that has been
pioneered by Soon Sam Kim and Samuel I. Weissman in the late 1970s. 1, 2 It has proven to …

Using time-resolved electron paramagnetic resonance (EPR) spectroscopy in conjunction
with optical excitation we study charge separation in conjugated polymers blended with [6 …