| 초록 |
We demonstrate an efficient Fluorescence Resonance Energy Transfer (FRET) in bulk heterojunction (BHJ) polymer solar cells (PSCs) by incorporating 4-(Dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM) in PTB7:PC71BM blends to improve both the photon absorption range and exciton harbesting. Increasing the range of the spectral absorption of light and efficiently harvesting photogenerated excitons. Unlike common multiblend systems, FRET based systems enable the effective use of multiple donors, thereby bringing significant improvements in light absorption and conversion. We demonstrate an increase in power conversion efficiency, and suggest that this system has improved exciton migration over long distances. This architecture transcends traditional multiblend systems, allowing multiple donor materials with separate spectral responses to work synergistically, thereby enabling an improvement in light absorption and conversion. |
