Boosting the Mechanical Stability and Power Output of Intrinsically Stretchable Organic Photovoltaics with Stretchable Electron Transporting Layer

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 16, 2025

Abstract Intrinsically stretchable organic photovoltaics (IS‐OPVs) are emerging as power sources for wearable technologies, enabling seamless integration into flexible and systems. A key feature of IS‐OPVs is the potential increased output photoactive area expands during stretching. However, current mechanical performance stability still fall short meeting demands practical applications. To overcome this limitation, study introduces, first time, a polymer:gel blend system highly electron transporting layer (ETL), which significantly enhances both IS‐OPVs. This novel ETL plays pivotal role in dissipating stress protecting brittle underlying layers. By incorporating ETL, device stretchability reinforced by introducing thereby maintaining initial conversion efficiency under 20% strain. As result, maximum substantially increases 23%, from 0.28 to 0.35 mW, large strain, while devices with conventionally ETLs caused 33% reduction output. thus offers pathway toward durable efficient photovoltaics.

Язык: Английский

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Organic photovoltaics generate more power under stretching

Matter, Год журнала: 2025, Номер 8(4), С. 102062 - 102062

Опубликована: Апрель 1, 2025

Язык: Английский

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Advancing Intrinsically Stretchable Organic Photovoltaics with a Nearly Amorphous Polymer Semiconductor

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 7, 2025

Abstract Current state‐of‐the‐art organic photovoltaic (OPV) films, composed of conjugated polymer donors and small molecule acceptors, are often limited by the high brittleness their rigid backbones, which restricts application in wearable devices. In contrast, all‐polymer OPVs have demonstrated enhanced intrinsic stretchability, but further advancements necessary to meet demands. Here, an uncharted strategy is reported enhance mechanical stretchability performance incorporating a nearly‐amorphous polymer, poly(indacenodithiophene‐co‐benzothiadiazole) (IDTBT) into layer‐by‐layer structured active layer. IDTBT possesses fracture strain ≈80%, significantly outperforming well‐known donor polymers like PM6. The incorporation enhances properties, with both optimized at low contents. More importantly, intrinsically stretchable demonstrate superior stability impressive power conversion efficiency 14.2%, highest date this category. Particularly, IDTBT‐strengthened retain 72% initial under tensile 50%, 68% even after being stretched hundreds times 30% strain, demonstrating exceptional stability. This approach underscores potential semiconductors designing highly OPVs, paving way for seamless integration electronics.

Язык: Английский

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Random Terpolymerization as a Design Strategy to Modulate Aggregation in NDI-Based Polymer Acceptors for All-Polymer Solar Cells

ACS Macro Letters, Год журнала: 2025, Номер unknown, С. 484 - 489

Опубликована: Март 26, 2025

Naphthalene diimide (NDI)-based conjugated polymers are prominent polymer acceptors in all-polymer solar cells (all-PSCs). However, these tend to exhibit strong self-aggregation, which can cause excessive phase separation and hinder optimal donor-acceptor mixing the bulk heterojunction blend. To address this issue, random terpolymerization was employed modulate aggregation of NDI-based acceptors, aiming enhance corresponding device performance all-PSCs. Four terpolymers (PNDI-T21, PNDI-T23, PNDI-T25, PNDI-RT) were synthesized by incorporating 10 mol % thiophene derivatives into PNDI-T2, a reference with regular configuration. Increased content enhanced backbone planarity, leading greater crystallinity, while highly randomized reduced both. When used as all-PSCs, PNDI-T21, weakest aggregation, achieved highest power conversion efficiency (5.3%), whereas strongest showed lowest (3.2%).

Язык: Английский

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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

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From fabrication to function: Innovations in intrinsically stretchable all-polymer solar cells

Deleted Journal, Год журнала: 2025, Номер unknown, С. 100072 - 100072

Опубликована: Май 1, 2025

Язык: Английский

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