Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 154206 - 154206
Published: July 22, 2024
Language: Английский
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Sept. 1, 2024
Self-assembled monolayers (SAMs) have become pivotal in achieving high-performance perovskite solar cells (PSCs) and organic (OSCs) by significantly minimizing interfacial energy losses. In this study, we propose a co-adsorb (CA) strategy employing novel small molecule, 2-chloro-5-(trifluoromethyl)isonicotinic acid (PyCA-3F), introducing at the buried interface between 2PACz perovskite/organic layers. This approach effectively diminishes 2PACz's aggregation, enhancing surface smoothness increasing work function for modified SAM layer, thereby providing flattened with favorable heterointerface perovskite. The resultant improvements crystallinity, minimized trap states, augmented hole extraction transfer capabilities propelled power conversion efficiencies (PCEs) beyond 25% PSCs p-i-n structure (certified 24.68%). OSCs CA achieve remarkable PCEs of 19.51% based on PM1:PTQ10:m-BTP-PhC6 photoactive system. Notably, universal also been achieved other two popular OSC systems. After 1000-hour maximal point tracking, encapsulated retain approximately 90% 80% their initial PCEs, respectively. introduces facile, rational, effective method to enhance performance SAMs, realizing efficiency breakthroughs both device structure, along improved operational stability. are essential high Here, authors develop molecule provide heterointerface, devices.
Language: Английский
Citations
44
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 6, 2025
The long exciton diffusion length (LD) plays an important role in promoting dissociation, suppressing charge recombination, and improving the transport process, thereby performance of organic solar cells (OSCs), especially thick-film OSCs. However, limited LD hinders further improvement device as film thickness increases. Here, organic-metal platinum complex, namely TTz-Pt, is synthesized served a solid additive into D18-Cl:L8-BO system. addition TTz-Pt enhanced crystallinity blends, reduced energy disorder, trap density, decreased non-radiative recombination binding energy, which conducive to prolonging TTz-Pt-treated film, facilitating dissociation process along with inhibiting recombination. Consequently, D18:L8-BO:IDIC (100 nm) exhibits champion power conversion efficiency (PCE) 20.12% (certified 19.54%), one highest PCEs reported for OSCs date. Remarkably, record-breaking PCE 18.84% yielded active layer 300 nm. Furthermore, superior universality This work provides simple universal approach extending by introducing complex achieve highly efficient
Language: Английский
Citations
2
Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 12, 2025
Abstract Compared to conventional organic solar cells (OSCs) with acidic PEDOT:PSS as the hole transport layer (HTL), inverted OSCs (i‐OSCs) zinc oxide (ZnO) electron (ETL) display significant advantages in terms of high stability. However, an obvious limitation i‐OSCs is that sol‐gel processed ZnO layers possess detrimental defects at interface, which hinders improvement its photovoltaic performance. To address this problem, a natural, and green dextran (Dex) used efficient interfacial passivator modify layer, thereby achieving enhanced device performance i‐OSCs. The introduction Dex efficiently suppresses recombination loss, resulting higher power conversion efficiencies (PCEs). Interestingly, Dex‐passivated exhibits broad applications ETL for different types i‐OSCs, including fullerene, non‐fullerene, all‐polymer OSCs, D18:Y6 system gives highest PCE 18.32%. This one values reported binary Moreover, application significantly improves stability, T 80 lifetimes based on PM6:Y6, D18:Y6, PM6:PY‐IT exceed 1500 h. These results imply excellent ZnO‐based high‐efficiency stable
Language: Английский
Citations
2
Small, Journal Year: 2025, Volume and Issue: unknown
Published: March 26, 2025
Heterojunction interfaces play a crucial role in charge carrier transport, influencing the overall photovoltaic performance of organic solar cells (OSCs). Despite importance, advancements interfacial engineering, especially optimizing microstructure and nanomorphology, have not kept pace with research on photoactive layers. In study, strategy is explored to control self-assembly growth alcohol-soluble Me-4PACz (4P) used as hole transport layer (HTL) OSCs. The surface architecture modified inorganic Co salts via Cu doping UV-ozone treatments, creating smooth top an increased Co3+/Co2+ ratio hydroxyl groups. This meticulous design fine-tuned assembly behavior self-assembled molecules, resulting transition from spherical aggregates more uniform worm-like morphology. Additionally, electrical optical properties are optimized passivate defects enhance wettability solvents, leading improved extraction reduced recombination losses. Consequently, OSC Cu-Co/4P HTL exhibited highest power conversion efficiency 20.42% (certified 20.20%). characteristic universality stability make potential candidate for widespread applications, particularly providing rationalized guidance further
Language: Английский
Citations
2
ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(9), P. 4209 - 4217
Published: Aug. 1, 2024
Improving the uniformity and density of self-assembled monolayers (SAMs) is crucial to elevate photovoltaic performance organic solar cells (OSCs). Herein, we introduced small molecules 1-hydroxybenzotriazole (HOBT) modulate distribution electrical properties (4-(7H-dibenzo[c,g]carbazol-7-yl)butyl)phosphonic acid (4PADCB) on indium tin oxide (ITO) transparent electrodes in an innovative manner. The hydroxyl group HOBT interacts with phosphate SAMs, while steric repulsion exerted by backbone efficiently regulates SAMs. This led a more uniform dense SAMs ITO. Furthermore, HOBT-modified have improved crystallization vertical phase separation upper active layer. Consequently, PM6:BTP-eC9 binary OSCs based exhibit impressive PCE 19.66%. Our work presents effective strategy for regulating SAM morphology offers promising approach advancing OSCs.
Language: Английский
Citations
12
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 64(1)
Published: Aug. 24, 2024
Disordered polymer chain entanglements within all-polymer blends limit the formation of optimal donor-acceptor phase separation. Therefore, developing effective methods to regulate morphology evolution is crucial for achieving morphological features in organic solar cells (APSCs). In this study, two isomers, 4,5-difluorobenzo-c-1,2,5-thiadiazole (SF-1) and 5,6-difluorobenzo-c-1,2,5-thiadiazole (SF-2), were designed as solid additives based on widely-used electron-deficient benzothiadiazole unit nonfullerene acceptors. The incorporation SF-1 or SF-2 into PM6 : PY-DT blend induces stronger molecular packing via interaction, leading continuous interpenetrated networks with suitable phase-separation vertical distribution. Furthermore, after treatment SF-2, exciton diffusion lengths films are extended over 40 nm, favoring charge transport. asymmetrical characterized by an enhanced dipole moment, increases power conversion efficiency (PCE) PY-DT-based device 18.83 % due electrostatic interactions. Moreover, a ternary strategy boosts PCE SF-2-treated APSC 19 %. This work not only demonstrates one best performances APSCs but also offers approach manipulate using rational-designed additives.
Language: Английский
Citations
12
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown
Published: June 22, 2024
Abstract The cathode interface layers (CILs) play a crucial role in enhancing the performance of organic solar cells (OSCs). However, challenges arise due to high work function CIL and inadequate contact with active layer, leading trap recombination poor charge extraction. In this study, novel approach is proposed improve injection extraction CILs by incorporating polyphenols, trihydroxybenzoic acid (TBA). Focusing on PDINN, its successfully reduced from 4.14 eV 3.80 obtained collection efficiency 91.23% through TBA regulation. These enhancements can be ascribed improved between layer CILs, enhanced formation fine fiber phase width inhibited recombination. As result, power conversion (PCE) binary OSCs comprising PM6: BTP‐ec9 exhibits an increase 18.2% 19.3%, placing it among one highest PCE values. Moreover, demonstrated notable applicability for another as well various systems. Overall, research underscores importance regulating modifying fully exploit their potential devices, while laying groundwork optimizing stability.
Language: Английский
Citations
10
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(47)
Published: Oct. 9, 2024
Abstract The emerging non‐fullerene acceptors with low voltage losses have pushed the power conversion efficiency of organic solar cells (OSCs) to ≈20% auxiliary morphology optimization. Thermal annealing (TA), as most widely adopted post‐treatment method, has been playing an essential role in realizing potential various material systems. However, procedure TA, i.e., way that TA is performed, almost identical among thousands OSC papers since ≈30 years ago other than changes temperature and time. Herein, a reverse thermal (RTA) technique developed, which can enhance dielectric constant active layer film, thereby producing smaller Coulomb capture radius (14.93 nm), meanwhile, forming moderate nano‐scale phase aggregation more favorable face‐on molecular stacking orientation. Thus, this method reduce decline open circuit conventional by achieving decreased radiative (0.334 eV) non‐radiative (0.215 recombination loss. RTA PM6:L8‐BO‐X device increases 19.91% (certified 19.42%) compared (18.98%). It shown exhibits superb universality 4 systems, revealing its dramatic be employed wide range OSCs.
Language: Английский
Citations
10
ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 14269 - 14277
Published: Feb. 24, 2025
Inverted perovskite solar cells (PSCs) have achieved great development, contributed by the advance of self-assembled monolayer (SAM) hole-transporting layers (HTLs) due to their distinctive molecular designability. However, SAM HTLs still present challenges achieving a compact and ordered surface, resulting in vacancies defects at interface as well adversely affecting growth perovskites. In this work, we propose micromolecule postdeposition process design HTL form high-quality perovskites achieve highly efficient inverted PSCs. We introduce etidronic acid (EA) fill reduce improve growing The EA can anchor substrate through P-OH anchors, occupying left MeO-4PACz, simultaneously create interaction with P═O C-OH functional groups. effectively fills reduces interface, passivates perovskites, facilitates carrier transport. Consequently, champion PCE 24.42% is for target PSCs, which much higher than efficiency (20.08%) control. This research provides guided widely applicable strategy development further advances performance
Language: Английский
Citations
1
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(44)
Published: Aug. 15, 2024
Abstract In recent years, self‐assembled monolayers (SAMs) have been proven to work efficiently as hole‐selective materials in both organic solar cells (OSCs) and perovskite cells. Although competitive performances are reported with these materials, a mechanistic understanding on device stability remains elusive. This study reveals that while various SAM molecules can increase the indium tin oxide (ITO) function versus vacuum, they may not consistently result ensure simultaneous improvement performance operational of devices. Energetically, achieving alignment between SAM‐modified electrode ionization energy (IE) donor is shown be crucial for low hole injection barrier, irrespective SAM's IE. Light‐induced degradation widely used SAM, (2‐(9H‐carbazol‐9‐yl)ethyl) phosphonic acid (2PACz), identified through diverse aging tests comprehensive chemical electronic characterizations. involves molecule decomposition reactions photoactive layer, contributing further degradation. Addressing challenges, sputtered nickel oxide/SAM bilayers proposed contact tailored interface energetics efficient photostable OSCs, offering promising alternative commonly hygroscopic PEDOT:PSS OSCs.
Language: Английский
Citations
8