Abstract

The incorporation of DBrB solid additive leads to the formation of a 3D interpenetrating network and an orderly arrangement of photoactive materials processed from halogen‐free solvent. The DBrB‐processed OSC based on PM6:Y6‐HU achieves the highest PCE of 18.6% and FF of 79.0% among the currently reported non‐halogenated‐processed binary devices. This strategy provides a valuable information for enhancing the photovoltaic performance of OSCs. image

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