A Low‐Cost 3D Spirobifluorene‐Based Acceptor for High‐Performance Ternary Organic Solar Cells

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 2, 2024

Abstract The advantages of 3D materials as guest components ternary organic solar cells (TOSCs) are being realized, showing great potential in improving device performance. However, the correlation between their distinctive structure and performance remains largely unexplored. Herein, a acceptor named SF‐HR is cost‐effectively synthesized utilizing twisted spirofluorene core. shows an edge‐on oriented packing but not disordered aggregation other molecules. When introduced into D18:Y6 binary system, can induce more predominant face‐on finer domain size blend, which facilitates exciton dissociation multi‐direction charge transport. Besides, exhibits complementary absorption cascaded energy levels with D18 Y6, contributing to improvement short‐circuit current density ( J sc ) open‐circuit voltage V oc ), respectively. Accordingly, optimized achieves higher 0.893 V, 27.13 mA cm −2 , fill factor (FF) 77.8%, respectively, than that host device, yielding excellent efficiency 18.85%. This success demonstrates utilization crystalline material component represents promising strategy for achieving state‐of‐the‐art OSCs, conducive understanding relationship from new perspective.

Язык: Английский

Quinoxaline based A-A Type Polymer Donors for Non-Fullerene Polymer Solar Cells

Synthetic Metals, Год журнала: 2024, Номер unknown, С. 117773 - 117773

Опубликована: Окт. 1, 2024

Язык: Английский