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A heptacyclic carbon–oxygen-bridged ladder-type unit, COi7, was designed. Two corresponding nonfullerene acceptors, COi7IC and COi7DFIC, were developed. The single crystal structure of COi7IC indicates an S-shaped backbone and a packing… Click to show full abstract
A heptacyclic carbon–oxygen-bridged ladder-type unit, COi7, was designed. Two corresponding nonfullerene acceptors, COi7IC and COi7DFIC, were developed. The single crystal structure of COi7IC indicates an S-shaped backbone and a packing via π–π interaction of the end groups. PTB7-Th:COi7DFIC solar cells gave a power conversion efficiency of 8.32%, with a decent fill factor of 71.9%.
Keywords:
bridged ladder;
heptacyclic carbon;
oxygen bridged;
carbon oxygen;
ladder type
Journal Title: Materials Chemistry Frontiers
Year Published: 2018
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Journal Title: Materials Chemistry Frontiers
Year Published: 2018
Link to full text (if available)
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recommendations!