Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 158663 - 158663
Published: Dec. 1, 2024
Language: Английский
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 9, 2024
Abstract Organic solar cells (OSCs) are gaining attention in building‐integrated and agricultural photovoltaics due to their light weight, mechanical flexibility, low‐cost solution processability. To achieve commercial viability, understanding the relationships between active layer material structure, film morphology, photovoltaic performance is crucial. Nanoscale infrared spectroscopy coupled with atomic force microscopy (nanoIR‐AFM) offers an advanced characterization of morphology at high resolution help understand OSC performance. This review outlines recent developments applications nanoIR‐AFM research, detailing its principles, instruments, functions. Strategies enhance morphological by discussed, offering insights into evolution device The highlights challenges faced potential role advancing technology. As continues evolve, it will play a critical development, providing essential technical means for further progress.
Language: Английский
Citations
5
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 5, 2024
Abstract Significant advancements in power conversion efficiency have been achieved organic solar cells with small molecule acceptors. However, stability remains a primary challenge, impeding their widespread adoption renewable energy applications. This review summarizes the degradation of different layers within device structure under varying conditions, including light, heat, moisture, and oxygen. For photoactive layers, chemical pathways polymer donors acceptors are examined detail, alongside morphological bulk heterojunction structure, which plays crucial role performance. The mechanisms commonly used anode cathode interlayers electrodes addressed, as these significantly influence overall stability. Mitigation methods for identified provided each section to offer practical insights improving longevity. Finally, an outlook presents remaining challenges achieving long‐term stability, emphasizing research directions that require further investigation enhance reliability performance real‐world
Language: Английский
Citations
5
Small, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 15, 2025
Carbazole-derived self-assembled monolayers (SAMs) are promising materials for hole-extraction layer (HEL) in conventional organic photovoltaics (OPVs). Here, a SAM Cbz-2Ph derived from 3,6-diphenylcarbazole is demonstrated. The large molecular dipole moment of allows the modulation electrode work function to facilitate hole extraction and maximize photovoltage, thus improving OPV performance. Additionally, flanking aryls help establish CH-π interactions forming dense well-organized HEL exhibit stronger van der Waals with donor PM6 than acceptor BTP-eC9. SAM-donor modulate distribution PM6:BTP-eC9 bulk-heterojunction film, leading enrichment near efficient ITO anode p-i-n OPVs. Consequently, binary PM6:BTP-eC9-based devices incorporating demonstrate an impressive efficiency 19.18%. These cells also showcase excellent operational stability, T80 lifetime ≈1260 h at maximum power point, over 10 times longer those using traditional PEDOT:PSS (T80 ≈96 h). Furthermore, universal applicability as evident through its successful implementation PM6:BTP-eC9:L8-BO-F-based ternary printed devices, achieving PCE 19.30% 16.96%, respectively.
Language: Английский
Citations
0
Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 5, 2025
Abstract Organic photovoltaics (OPV) are a promising solar cell technology well‐suited to mass production using roll‐to‐roll processes. The efficiency of lab‐scale cells has exceeded 20% and considerable attention is currently being given understanding minimizing the remaining loss mechanisms preventing higher efficiencies. While recent improvements partly owed reducing non‐radiative recombination losses at open circuit, low fill factor ( FF ) due significant transport resistance becoming Achilles heel OPV. term refers voltage light intensity‐dependent charge collection in low‐mobility materials. In this perspective, it demonstrated that even highest organic (OSCs) reported to‐date have performance can be attributed lead high losses. A closer look material properties influencing provided. How experimentally characterize quantify described by providing easy follow instructions. Furthermore, causes theory behind detailed. particular, relevant figures merit (FoMs) different viewpoints on integrated. Finally, we outline strategies followed minimize these future cells.
Language: Английский
Citations
0
Science China Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 14, 2025
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 10, 2025
Abstract Molecular orientation stands as the quintessential hallmark of conjugated self‐assembled monolayers (SAMs), which have recently catalyzed noteworthy advancements in organic photovoltaics (OPVs). Nevertheless, an unambiguous understanding these directional arrangements and their impact on optoelectronic properties remains elusive. To address this issue, herein three SAMs with representative orientations, i.e., edge‐on (BCZ‐1), tilt‐on (4PACz) face‐on (BCZ‐2) are meticulously designed. These orientations been rigorously validated by sum frequency generation vibrational spectroscopy first‐principles calculations. Remarkably, unequivocal correlation between molecular device performance is discerned. Particularly, oriented BCZ‐1 exhibits largest dipole moment normal to electrode, accompanied a dense uniform coverage. features collectively contribute its strongest work function increment for ultra‐fast hole extraction minimum interfacial carrier recombination. As result, champion power conversion efficiency 19.93% achieved devices based D18:L8‐BO active layer, representing one highest values reported binary bulk heterojunction OPVs. Besides, shows great potential practical applications due superior up‐scalability enhanced shelf‐stability. Overall, offers in‐depth insights into behaviors SAMs, opening new avenues unlock
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 12, 2024
Abstract P‐type carbazole‐derived self‐assembled monolayers (SAMs) have garnered significant attention as promising hole transport layers (HTLs) in the development of highly efficient organic solar cells (OSCs). However, it still lacks effective navigation to modulate terminal functional groups SAMs achieve a compromise between highest occupied molecular orbital (HOMO) energy levels and self‐aggregation behavior. Herein, are adjusted three synthesized, namely, t‐Bu‐3PACz, Ph‐3PACz, Bz‐3PACz comprehensively investigate their intrinsic properties influence on photovoltaic performance. Among them, Ph‐3PACz featuring an exceptionally suitable conjugated region steric hindrance exhibits best compatibility with active layer, superior electrical conductivity, HOMO level aligning polymer donor, ordered film packing. As result, devices based exhibit open‐circuit voltage ( V OC ) 0.850 V, short‐circuit current density J SC 28.7 mA cm −2, fill factor (FF) 78.5%, thus resulting remarkable power conversion efficiency (PCE) 19.2%. This work provides easily navigable method packing SAMs, thereby achieving OSCs.
Language: Английский
Citations
2
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 29, 2024
Abstract Regulating the morphology and molecular ordering of active layer is crucial for developing high‐performance organic solar cells (OSCs). However, enhancing stacking challenging as non‐fullerene acceptors (NFAs) are confined within polymer network owing to well donor/acceptor miscibility fast solvent evaporation. Herein, 2,5‐dibromothiazol (DBrTz) removable solid additive chosen optimize film‐forming kinetics aggregation PM6:L8‐BO blends. During film formation process, chloroform evaporates first, trapping DBrTz in (pseudo‐dry state). Thereafter, will gradually volatilize, persistently prompting L8‐BO stack aggregate orderly until volatilization completed. The behavior designated “enhanced pseudo‐dry film,” an occurrence hitherto unobserved other additives. This results more compact π – long‐range L8‐BO. Furthermore, facilitated increased face‐on orientations improved vertical component distributions. optimized facilitates charge generation, transport, extraction. Consequently, DBrTz‐processed OSCs achieved a power conversion efficiency (PCE) 19.4%. work elucidates principles additives offers valuable insights fostering development novel improve OSCs.
Language: Английский
Citations
2
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 14, 2024
The lack of effective and non-corrosive hole-transporting layer (HTL) materials has remained a long-standing issue that severely restricts the performance organic solar cells (OSCs). Most pH-neutral conjugated polyelectrolytes (CPEs) exhibit inferior to acid-doped HTL due their low doping density. In this study, series CPEs is designed synthesized with high density as materials. Through an elaborate synthetic route, two sulfonate-terminating alkoxyl side chains can be introduced into thiophene, by which electron-rich, highly soluble, chemically stable thiophene monomer enable subsequent polymerization. CPE PTT-F remarkable self-doping property enhanced from 2.01 × 10
Language: Английский
Citations
1
Macromolecular Rapid Communications, Journal Year: 2024, Volume and Issue: 45(22)
Published: Aug. 9, 2024
Efficient cathode interfacial layers (CILs) have become a crucial component of organic solar cells (OSCs). Charge extraction barriers, trap states, and significant transport resistance may be induced due to the unfavorable interlayer, limiting device performance. In this study, poly(4-vinylpyridine) is used as CIL for OSCs, new type named P4VP-I synthesized through quaternization strategy. Compared P4VP, exhibits enhanced conductivity optimized work function. OSCs employing ETL demonstrate prolonged carrier lifetime, suppressed charge recombination, achieve higher power conversion efficiencies (PCE) than commonly ETLs such PFN-Br Phen-NaDPO.
Language: Английский
Citations
0