ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 22, 2025
Language: Английский
Advanced Science, Journal Year: 2023, Volume and Issue: 11(8)
Published: Nov. 9, 2023
Molecular design is crucial for endowing conjugated polymers (CPs) with unique properties and enhanced electronic performance. Introducing Hydrogen-bonding (H-bonding) into CPs has been a broadly exploited, yet still emerging strategy capable of tuning range encompassing solubility, crystallinity, properties, solid-state morphology, stability, as well mechanical self-healing properties. Different H-bonding groups can be utilized to tailor based on the applications interest. This review provides an overview classes (assorted by different H-bond functional groups), synthetic methods introduce corresponding impact in materials Recent advances addressing trade-off between performance durability are also highlighted. Furthermore, insights future directions prospects H-bonded discussed.
Language: Английский
Citations
36
Advanced Materials, Journal Year: 2023, Volume and Issue: 36(1)
Published: Aug. 4, 2023
All-polymer solar cells (all-PSCs) possess excellent operation stability and mechanical robustness than other types of organic cells, thereby attracting considerable attention for wearable flexible electron devices. However, the power conversion efficiencies (PCEs) all-PSCs are still lagging behind those small-molecule-acceptor-based systems owing to limitation photoactive materials unsatisfactory blend morphology. In this work, a novel terpolymer, denoted as PBDB-TFCl (poly4,8-bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)benzo[1,2-b:4,5-b″]dithiophene-1,3-bis(2-ethylhexyl)-5,7-di(thiophen-2-yl)-4H,8H-benzo[1,2-c:4,5-c″]dithiophene-4,8-dione-4,8-bis(4-chloro-5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene), is used an donor coupled with ternary strategy optimize performance all-PSCs. The addition PBDB-TCl unit deepens highest occupied molecular orbital energy level, reducing voltage losses. Moreover, introduction guest (D18-Cl) effectively regulates phase-transition kinetics PBDB-TFCl:D18-Cl:PY-IT during film formation, leading ideal size aggregations enhanced crystallinity. devices exhibit PCE 18.6% (certified 18.3%), judged value so far obtained Besides, based on active layer, manufactured 36 cm
Language: Английский
Citations
35
Advanced Materials, Journal Year: 2023, Volume and Issue: 36(11)
Published: Dec. 15, 2023
Abstract The development of intrinsically stretchable organic photovoltaics ( is ‐OPVs) with a high efficiency significance for practical application. However, their efficiencies lag far behind those rigid or even flexible counterparts. To address this issue, an advanced top‐illuminated OPV designed and fabricated, which has performance, through systematic optimizations from material to device. First, the stretchability active layer largely increased by adding low‐elastic‐modulus elastomer styrene‐ethylene‐propylene‐styrene tri‐block copolymer (SEPS). Second, conductivity opaque electrode are enhanced conductive polymer/metal (denoted as M‐PH1000@Ag) composite strategy. Third, optical electrical properties sliver nanowire transparent improved solvent vapor annealing High‐performance ‐OPVs successfully fabricated structure, provides record‐high 16.23%. Additionally, incorporating 5–10% elastomer, balance between achieved. This study valuable insights into device high‐efficiency ‐OPVs, low‐cost production excellent stretchability, indicates potential future applications OPVs.
Language: Английский
Citations
35
Nano Energy, Journal Year: 2024, Volume and Issue: 125, P. 109541 - 109541
Published: March 26, 2024
Language: Английский
Citations
18
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(19)
Published: Jan. 11, 2024
Abstract To achieve commercial application of organic solar cells (OSCs), it is necessary to reduce material costs and improve device efficiency. This paper reports on the utilization a multifunctional building block, namely 3‐cyanoesterthiophene, which exhibits simple structure accessibility synthetic for cost‐effective high‐performance polymer donors (PDs). Meanwhile, ternary terpolymerization strategies have been studied. Two similar PDs, PBTCl0‐TCA PBTCl100‐TCA, are synthesized, devices exhibit less‐than‐satisfactory efficiency 13.21% 11.53% due mismatching energy level imperfect morphology. The two PDs with comparable structures commendable compatibility easily form alloy‐like phase in active layer, can effectively boost 14.17% retained high J SC significant improved open‐circuit voltage ( V OC ) fill factor (FF). Encouraged by blending phenomenon, donor (PBTCl50‐TCA) same ratio random designed. And over 17% binary OSCs using demonstrated. synergies incorporation cyanoester‐group terpolymer endow developed deep‐lying levels, face‐on orientation, thermodynamic miscibility prevailing nonfullerene acceptor appropriate crystallinity. findings study provide valuable insights support advancement PDs.
Language: Английский
Citations
15
Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 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.
Language: Английский
Citations
2
Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 2, 2025
Abstract In recent years, polymer solar cells (PSCs) have achieved rapid progress, with power conversion efficiencies (PCEs) reaching up to 20.25%, driven by significant advancements in device fabrication and active‐layer materials. The ternary polymerization strategy has proven be a straightforward effective approach for developing high‐performance photoelectric polymers incorporating third monomer into the backbone. This incorporation effectively optimizes intrinsic properties, including UV–vis absorption, energy levels, solubility, crystallinity, morphology, charge transfer, mechanical robustness, batch‐to‐batch reproducibility, stability. review highlights latest designing photoactive copolymers (both donors acceptors), particular focus on stability, potential applications commercial development. aim is provide valuable guidance development of materials using strategy.
Language: Английский
Citations
2
Advanced Science, Journal Year: 2023, Volume and Issue: 11(8)
Published: Dec. 19, 2023
Abstract In recent decades, polymer semiconductors, extensively employed as charge transport layers in devices like organic field‐effect transistors (OFETs), have undergone thorough investigation due to their capacity for large‐area solution processing, making them promising mass production. Research efforts been twofold: enhancing the mobilities of semiconductors and augmenting mechanical properties meet demands flexible devices. Significant progress has made both realms, propelling practical application electronics. However, integrating excellent semiconducting into a single still remains significant challenge. This review intends introduce design strategies discuss high‐charge mobility stretchable conjugated polymers. addition, another key challenge faced this cutting‐edge field is maintaining stable performance during long‐term deformations. Therefore, also discusses development healable avenue improve lifetime device. conclusion, challenges outline future research perspectives interdisciplinary are highlighted.
Language: Английский
Citations
18
Macromolecules, Journal Year: 2024, Volume and Issue: 57(12), P. 5902 - 5914
Published: June 5, 2024
Conjugated polymers (CPs) are pivotal for high-mobility applications, typically avoiding nonconjugated units due to their perceived negative impact on charge transport. Contrary this belief, our study introduces a unit, DKPDO, which when employed as conjugation-break spacer (CBS), significantly enhances DKPDO was obtained center-modified isoindigo variant featuring strongly electron-withdrawing amide groups that diminish the electron density and foster multiple hydrogen-bonding interactions. This results in enhanced deficiency reinforced coplanarity relative isoindigo. incorporated into polymer backbone, comprising bithiophene, create series of terpolymers with varied molar ratios, allowing systematic evaluation solubilities, interchain interactions, crystallinities, energy levels. Notably, incorporating universal improvement hole mobilities operational stabilities over DKPDO-free counterpart. Remarkably, terpolymer containing 2.5% achieves high mobility 4.12 cm2 V–1 s–1, approximately 6-fold higher than parent CP among highest CPs based center-inserted units. The not only, first time, realizes transport enhancement CBS backbones but also sets precedent strategic use developing high-performing CPs.
Language: Английский
Citations
9
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(48)
Published: Aug. 6, 2024
Abstract The ternary copolymerization strategy has emerged as a promising for developing high‐efficiency donor polymers in polymer solar cells (PSCs). Terpolymers based on the star PM6 have already realized good photovoltaic performance. However, challenges such intricate synthesis of fluorine‐substituted benzodithiophene (F‐BDT) unit and entropy increase induced by backbone disorder hindered construction high‐performance terpolymers. In this work, these are addressed opting cost‐effective chlorinated‐substituted (Cl‐BDT) an alternative to F‐BDT incorporating large dipole moment electron‐deficient TPD group third component into PM7. As expected, approach effectively suppresses terpolymer while enhancing crystallinity, thereby optimizing morphology improving charge generation transport. Remarkably, PM7‐TPD‐10‐based device with 10% replacement achieves champion power conversion efficiency (PCE) 18.26%. After introducing PM7‐TPD‐10 D18:L8‐BO blend, dual mechanism 19.40% is realized. This work demonstrates that high moiety construct terpolymers important suppress facilitating optimization
Language: Английский
Citations
9