Synergistic Molecular Engineering of Fully Non‐fused Ring Acceptors for Achieving Efficient Zigzag Charge Transport Channel and Low Non‐Radiative Voltage Loss

Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 20, 2025

Abstract Fully non‐fused ring acceptor (FNFRA) are potentially important for boosting the performance and lowering material costs of organic solar cells (OSCs). Despite their potential, FNFRA‐based OSCs have not yet matched fused partial counterparts due to limited molecular engineering research. In this work, by incorporating a synergistic strategy tailoring β ‐side chain end‐group FNFRA with cyclic “belt” simultaneously, named C6FT‐2F2Cl is constructed. Compared other symmetric FNFRAs, features shorter π–π stacking distance an efficient zigzag charge transport channel, leading enhanced balanced carrier mobilities, lower non‐radiative energy loss higher short‐circuit current density. The power conversion efficiency (PCE) C6FT‐2F2Cl‐based OSC reached 13.19%, which among best in devices. This work provides new valuable insights mechanism associated FNFRAs paves route materials design toward high‐performance low‐cost OSCs.

Language: Английский

Non-fused and fused ring non-fullerene acceptors

Current Opinion in Colloid & Interface Science, Journal Year: 2024, Volume and Issue: unknown, P. 101864 - 101864

Published: Sept. 1, 2024

Language: Английский