This research shows charge recombination rates decrease with higher bandgap in polythiophene solar cells, indicating improved efficiency in non-fullerene acceptor systems.
The bi-molecular recombination rate ( γ ) of charge carriers in P3HT:NFA blends decreases gradually as the diagonal bandgap (IE D –EA A ) increases.
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Althobaiti et al. (2026) studied this question.
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