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A Supramolecular Complex in Small-Molecule Solar Cells based on Contorted Aromatic Molecules |
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| Authors: | Seok Ju Kang Jong Bok Kim Chien-Yang Chiu Seokhoon Ahn Theanne Schiros Stephanie S Lee Kevin G Yager Michael F Toney Yueh-Lin Loo Colin Nuckolls |
| Affiliation: | Department of Chemistry, Columbia University, New York, NY 10027 (USA) http://nuckolls.chem.columbia.edu/ |
| Abstract: | "Ball and socket" motif: The contorted dibenzotetrathienocoronene (6-DBTTC) forms a complex with the C(70) fullerene PC(70) BM embedded in an amorphous phase of PC(70) BM. The materials are processable into organic solar cells in solution. The power conversion efficiency is maximal when there is a 1:2 molar ratio of 6-DBTTC to PC(70) BM. Formation of the supramolecular complex directly affects charge separation in the active layer. |
| Keywords: | fullerenes molecular electronics organic semiconductors organic solar cells supramolecular chemistry |
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