Elucidating the photodegradation pathways of polymer donors for organic solar cells with seven months of outdoor operational stability

Nature Photonics, Год журнала: 2025, Номер unknown

Опубликована: Март 21, 2025

Язык: Английский

---

Tailoring selenium alkyl chain-containing small molecule donor enables efficient ternary solar cells with reduced charge recombination

Chemical Engineering Journal, Год журнала: 2025, Номер 513, С. 163009 - 163009

Опубликована: Апрель 23, 2025

Язык: Английский

---

Rationalizing Star‐Shaped Nonfullerene Acceptors in Ternary Organic Solar Cells: Morphology Mediation Facilitates Exciton and Carrier Dynamics

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 7, 2025

Abstract Star‐shaped trimeric acceptors have garnered increasing attention in organic solar cells (OSCs), yet a mechanistic gap exists on regulation of morphology and carrier dynamics. Herein, nonfullerene acceptor named BTF‐Trimer bearing benzotrifuran core with more electronegative oxygen atoms is newly designed, which fosters intermolecular interactions both polymer donors small‐molecule acceptors. possesses reduced aggregation tendencies high glass transition temperature, are conducive to inhibiting excessive phases stabilizing film morphology, respectively. Notably, as mediator strengthened host donor‐acceptor compatibility ternary blend active layers, forming dual‐fibril interpenetrating networks that promoted exciton dissociation hole transfer well alleviated bimolecular recombination devices. Consequently, the power conversion efficiency T 70 (the time required reach 70% initial efficiency) lifetime OSCs an Ar atmosphere achieved 19.13% ≈2800 h, This study highlights distinctive merits star‐shaped suppress over‐crystallization enhance phase continuity, offering insights into interplay phase‐separated dynamics, plays critical role

Язык: Английский

---

Synthesis of Ether-Bonded Perylene Diimide Oligomers without Noble-Metal Catalysts for Organic Solar Cells

Dyes and Pigments, Год журнала: 2025, Номер unknown, С. 112892 - 112892

Опубликована: Май 1, 2025

Язык: Английский

---

Stability of Organic Photovoltaics: From Root Causes to Advanced Analytical Techniques

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 10, 2025

Abstract The primary challenge in the commercialization of organic photovoltaics (OPVs) is ensuring long‐term stability, making study their degradation mechanisms essential. This centered on underlying degradation, providing a systematic and in‐depth analysis instability factors. A clear distinction between burn‐in loss established, with comprehensive examination governing each process. review highlights how pathways vary depending external environmental factors specific device layers, while also identifying key indicators for mitigating instability. Furthermore, this work extensively discusses analytical tools employed stability research, offering structured overview methodologies, obtained results, practical implications. Advanced high potential future applications are introduced, along principles prospective contributions to analysis. By integrating mechanistic perspective an exploration techniques, provides framework understanding OPV offers valuable insights into development effective stabilization strategies.

Язык: Английский

---

Utilizing Zinc Oxide and Fluorescent Agent as a Versatile Electron Transport Layer for Highly Efficient and Stable Inverted Polymer Solar Cells

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Май 13, 2025

The development of excellent electron transport layers (ETLs) is crucial for high-performance organic solar cells (OSCs). In this work, we have developed a novel, versatile ETL composed zinc oxide (ZnO) and fluorescent agent to enhance the photovoltaic performance photostability OSCs. Unlike bulk doping ZnO interlayer, use conjugated small-molecule agent, sodium 2,2'-([1,1'-biphenyl]-4,4'-diyldivinylene)-bis(benzenesulfonate) (CBS), modify surface thus construct ZnO/CBS bilayer structure. shows lower work function, which beneficial extraction. Moreover, photoinduced transfer from CBS increases conductivity ZnO. Notably, fluorescence generated by can also be quenched active layer, indicating existence exciton or charge between layer. bidirectional layer synergistically improves enhances performance. Consequently, PM6:eC9 PM6:L8-BO based OSCs with as achieve power conversion efficiencies 17.42 18.16%, respectively, are among highest levels in inverted thickness insensitivity PM6:eC9-based still exhibit high PCE 15.66% at thick-film 130 nm 20 CBS. addition, modification efficiently blocks ultraviolet light reduces catalytic activity thereby enhancing

Язык: Английский

---

4-Iodobenzonitrile as Effective Solid Additive for High-Efficiency Polymer Solar Cells

Polymers, Год журнала: 2025, Номер 17(10), С. 1386 - 1386

Опубликована: Май 18, 2025

Solid additive engineering is a well-established and effective strategy for enhancing active layer morphology in polymer solar cells (PSCs), thereby improving their power conversion efficiency (PCE). However, the availability of solid molecules remains limited, especially those combining simple structural units with large dipole moment to promote strong interactions materials. In this study, we introduce 4-iodobenzonitrile (IBZN), commercially available, low-cost, structurally molecule high (3.33 debye), as PSCs. Theoretical calculations, ultraviolet–visible (UV-Vis) spectroscopy experiments, analysis demonstrate that IBZN forms L8-BO, subsequently packing mode crystallization. The incorporation into PM6:L8-BO-based PSCs resulted an increased fill factor (FF) 79.54% boosted PCE from 17.49% 18.77%. Furthermore, has also demonstrated outstanding regulatory effects systems based on other Y-series acceptors, such Y6 BTP-ec9. This study not only introduces characterized by but offers valuable insights subsequent development novel additives aimed at

Язык: Английский

---

Crystallization-driven effect enables organic solar cells with efficiency exceeding 19.4 %

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 164137 - 164137

Опубликована: Май 1, 2025

Язык: Английский

---