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The research aims to reduce trap density and improve molecular packing in organic solar cells using a selenium-substituted acceptor.

Optimized Molecular Packing through Selenium‐Substituted Non‐Fullerene Acceptor for Trap Density Reduction in High‐Performance Organic Solar Cells

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Randomized trial shows enhanced efficiency in organic solar cells, suggesting effective morphology control techniques.

The research aims to reduce trap density and improve molecular packing in organic solar cells using a selenium-substituted acceptor.
Designed and synthesized selenium-substituted small-molecule acceptor BSP-F.
Incorporated BSP-F into D18:L8-BO binary materials system.
Evaluated the efficiency and trap density of the developed organic solar cells.
Achieved a high efficiency of 20.07% in D18:L8-BO:BSP-F devices.
Reduced trap density to 7.93 × 10^15 cm−3.
Decreased non-radiative energy loss to 0.174 eV.

Liu et al. (2026) studied this question.

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