Figure 3: Pentacene contribution in nanocrystal/pentacene solar cells.
From: In situ measurement of exciton energy in hybrid singlet-fission solar cells

Normalized external quantum efficiency spectra of pentacene photovoltaic devices prepared with a size series of PbSe. We observe a contribution from pentacene in devices with nanocrystals up to 1.08 eV, indicated with an arrow.