Figure 3 | Scientific Reports

Figure 3

From: Peculiarity of Two Thermodynamically-Stable Morphologies and Their Impact on the Efficiency of Small Molecule Bulk Heterojunction Solar Cells

Figure 3

(a) UV-Visible absorption spectra of p-DTS(FBTTh2)2, PC71BM and blend of p-DTS(FBTTh2)2:PC71BM in chlorobenzene solvent (b) Absorption spectra of p-DTS(FBTTh2)2:PC71BM blend solution and cast films under thermal annealing. The absorption intensities are normalized. (c) Photoluminescence spectra of as-cast p-DTS(FBTTh2)2:PC71BM film after thermal annealing at 80 °C and 100 °C. (d) UV- Visible absorption and (e) photoluminescence spectra of p-DTS(FBTTh2)2:PC71BM with 0.25 vol.% DIO after thermal annealing at 80 °C.

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