Abstract

This work reports a new bithiophene imide (BTI)‐based conjugated polymers, which feature linear n‐octyl group on thiophene π‐bridge, yielding over 15% efficiency in all‐polymer organic solar cells (OSCs), which is among the highest values for all‐polymer OSCs. This work will inspire the exploration of BTI‐based polymer semiconductors in the development of new high‐performance polymer donors for non‐fullerene OSCs. More details are discussed in the article by Sun et al. on page 2900—2908.image

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