Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 29, Issue 18, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202203356
Keywords
electron-vibration coupling; energy loss; molecular design; non-fullerene acceptors; organic solar cells
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Low energy loss is crucial for high photovoltaic efficiency in organic solar cells. In this Concept article, we summarize recent theoretical advances in understanding the energy loss mechanisms of A-D-A electron acceptors at the molecular level. We emphasize the importance of electron-vibration coupling in reducing energy loss and describe effective molecular design strategies to achieve low energy loss by decreasing electron-vibration couplings.
Low energy loss is a prerequisite for organic solar cells to achieve high photovoltaic efficiency. Electron-vibration coupling (i. e., intramolecular reorganization energy) plays a crucial role in the photoelectrical conversion and energy loss processes. In this Concept article, we summarize our recent theoretical advances on revealing the energy loss mechanisms at the molecular level of A-D-A electron acceptors. We underline the importance of electron-vibration couplings on reducing the energy loss and describe the effective molecular design strategies towards low energy loss through decreasing the electron-vibration couplings.
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