Research Article

Ultrafast Charge and Triplet State Formation in Diketopyrrolopyrrole Low Band Gap Polymer/Fullerene Blends: Influence of Nanoscale Morphology of Organic Photovoltaic Materials on Charge Recombination to the Triplet State

Figure 2

Triplet-triplet absorption and radical cation absorption of the PDPP polymer (converted to wavelength scale; data taken from [14]).