![]() ![]() This study presents a low-cost approach to synthesizing electron-deficient TPD units for the construction of P D materials with excellent universality and superior performance. Further studies showed that PTTB-F can match multiple acceptors and exhibit promising device performance. The OSCs based on PTTB-F with weaker intermolecular forces in comparison with PTTB-H showed a decent PCE of 18.06% when blended with the small molecule acceptor L8-BO, which improves the open-circuit voltage and shapes a suitable phase separation morphology. Both P Ds without and with fluorine substitution possessed similar optical properties, but PTTB-F exhibited deeper molecular energy levels and stronger aggregation behavior in the solid state. Relying on the designed synthetic route, two TPD-based P Ds, namely PTTB-H and PTTB-F, were synthesized. ![]() Herein, a convenient synthetic route of thienopyrrole-4,6-dione (TPD) acceptor unit derivatives was developed, which greatly minimizes the synthetic cost of the relevant polymer donors ( P Ds). One key strategy to address this issue is to optimize the synthetic method of the active layer materials. From there you can shift click on the glowing quest icons to complete them.To realize the application of organic solar cells (OSCs), emphasis must be placed on reducing material cost, which is one of the golden triangle elements.
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