Highly efficient indacenodithiophene-based polymeric solar cells in conventional and inverted device configurations

Highly efficient bulk-heterojunction polymer solar cells based on two indacenodithiophene-containing low bandgap, high mobility polymers in both of their conventional and inverted device configurations are demonstrated. The highest power conversion efficiency obtained from the conventional structure device is 6.3%, while the PCE of the inverted device reaches 4.9%. These results are very encouraging for further material and device optimization.

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► Bulk-heterojunction solar cells based on indacenodithiophene-containing polymers.
► FET mobilities of higher than 10−2 cm2 V−1 s−1 are demonstrated.
► High power conversion efficiencies between 4% and 5% for inverted configuration devices.