High‐Performance Organic Solar Cells Enabled by 3D Globally Aromatic Carboranyl Solid Additive DOI
Hanqiang Wang, Zhicheng Zhong, Sergio Gámez‐Valenzuela

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 18, 2024

Abstract A key factor in optimizing organic solar cells (OSCs) is the precise control of blend film morphology to enhance exciton dissociation and charge transport. Solid additives play a vital role this process, with 3D polyhedral or spherical molecules being ideal candidates due their delocalized π‐orbitals omnidirectional However, application classical fullerene derivatives as limited by synthetic complicacy poor solubility. Herein, potential globally aromatic carboranyl cages solid additives, specifically 1‐amino‐ o ‐carborane (CB‐NH 2 ) 1‐carboxy‐ (CB‐COOH), explored fine‐tune improve performance OSCs. These provide an extensive surface for hydrogen bonding interactions, which serve driving force manipulating vertical phase separation active layer crystallinity. Remarkably, CB‐NH ‐processed devices well‐tuned yield remarkable power conversion efficiency 19.48%, highlighting effectiveness on improving OSC performance. This work challenges reliance offers new insights into mechanisms can achieve high OSCs, emphasizing significance molecular engineering development next‐generation cell technology.

Language: Английский

80% Fill Factor in Organic Solar Cells with a Modified Nickel Oxide Interlayer DOI Creative Commons
David Garcia Romero,

Gerbrand Bontekoe,

Jacopo Pinna

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 5, 2025

Abstract The efficiency of organic solar cells has raised drastically in the past years. However, there is an undeniable lack hole transport layers that can provide high carrier selectivity, low defect density, and processing robustness, simultaneously. In this work, issue addressed by studying generation surface passivation nickel oxide (NiO x ). It revealed oxidation state species on NiO lowers contact resistance but hinders charge extraction when employed as layer cells. By using them coordination centers, a straightforward modification strategy implemented (2‐(9H‐carbazol‐9‐yl)ethyl)phosphonic acid (2PACz) enhances increases cell from 11.46% to 17.12%. Additionally, robustness across different deposition methods carbazole molecule demonstrated. Finally, fine‐tuning Fermi level various carbazole‐based molecules, particular with ((4‐(7H‐dibenzo[c,g]carbazol‐7‐yl)butyl)phosphonic (4PADCB), power conversion 17.29% achieved, outstanding combination V OC 0.888 fill factor 80%.

Language: Английский

Citations

3
Low‐Volatility Fused‐Ring Solid Additive Engineering for Synergistically Elongating Exciton Lifetime and Mitigating Trap Density Toward Organic Solar Cells of 20.5% Efficiency DOI Open Access
Xin Song,

Busheng Zhang,

Xingting Liu

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Abstract Volatile solid additives (VSAs) with single or fused‐ring structures have attracted much attention for enhancing power conversion efficiencies (PCEs) of organic solar cells (OSCs). While the working mechanisms high‐volatility single‐ring been well studied, influence low‐volatility VSAs on molecular aggregations and exciton/carrier dynamics remains still unclear. Herein, 3,6‐dibromothieno[3,2‐b]thiophene (3,6TTBr) is selected as a representative VSA to elucidate its mechanism. Via theoretical experimental joint investigation, it found that rigid planar 3,6TTBr molecules adsorb onto terminal units L8‐BO (acceptor), inducing loose space adjacent molecules. The thus favors center‐terminal packing larger interfragment distance, which relieves over‐aggregation induces ordered packing. Consequently, treatment reduces aggregation‐caused quenching, photoluminescence quantum yield exciton lifetime film. combination above properties reduced trap density improved carrier transport in 3,6TTBr‐treated devices contributed PCE 20.1%. To validate broad applicability findings, 1,5‐dibromonaphthalene (1,5‐BN), another solid, explored. 1,5‐BN achieved an impressive 20.5%, verifying validity strategy boosting OSC performances.

Language: Английский

Citations

3
Triadic Halobenzene Processing Additive Combined Advantages of Both Solvent and Solid Types for Efficient and Stable Organic Solar Cells DOI
Jaeyeong Park, Seonghun Jeong, Zhe Sun

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 3, 2024

Solvent additives with a high boiling point (BP) and low vapor pressure (VP) have formed key handle for improving the performance of organic solar cells (OSCs). However, it is not always clear whether they remain in active-layer film after deposition, which can negatively affect reproducibility stability OSCs. In this study, an easily removable solvent additive (4-chloro-2-fluoroiodobenzene (CFIB)) BP VP introduced, behaving like volatile solid that be completely removed during device fabrication process. In-depth studies CFIB addition into D18-Cl donor N3 acceptor validate its dominant non-covalent intermolecular interactions through effective electrostatic interactions. Such phenomena improve charge dynamics kinetics by optimizing morphology, leading to enhanced D18-Cl:N3-based devices power conversion efficiency 18.54%. The CFIB-treated exhibits exceptional thermal (T80 lifetime = 120 h) at 85 °C compared CFIB-free device, because morphological robustness evolving no residual film. features combination advantages (easy application) (high volatility) additives, demonstrating great potential use commercial mass production

Language: Английский

Citations

16
Recent development in solid additives enables high-performance organic solar cells DOI

Waqar Ali Memon,

Zihao Deng, Feng He

et al.

EnergyChem, Journal Year: 2024, Volume and Issue: 6(4), P. 100129 - 100129

Published: June 15, 2024

Language: Английский

Citations

13
Amplifying High‐Performance Organic Solar Cells Through Differencing Interactions of Solid Additive with Donor/Acceptor Materials Processed from Non‐Halogenated Solvent DOI Creative Commons
Muhammad Haris, Zakir Ullah, Seungjin Lee

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(35)

Published: July 16, 2024

Abstract Developing non‐halogenated solvent‐processed organic solar cells (OSCs) demands precise control over the bulk‐heterojunction (BHJ) morphology of photoactive layer. However, limited solubility halogen‐free solvents to materials hinders microstructure fine‐tuning for boosting photovoltaic performance. This study not only examines debated intermolecular interactions between DBrDIB solid additive and but also analyzes substantial influence volatile on BHJ morphological properties. The effectively restricts excessive aggregation Y6‐BO regulates phase separation, which is attributed strong with rapid quenching during formation. It then achieves a well‐mixed D/A favorable domain size, resulting in balanced dispersion D/A, ultimately leading markedly enhanced charge transfer transport as well suppressed recombination. transformative use o ‐xylene/DBrDIB solvent system propels PM6:Y6‐BO PM6:Y6‐HU OSCs impressive efficiencies 17.9% 19.1%, respectively, outperforming those devices. These findings provide crucial insights into theoretical experimental areas, offering actionable guidelines designing high‐performance processed from solvent.

Language: Английский

Citations

12
Solid Additive Engineering for Next‐generation Organic Photovoltaics DOI
Dingqin Hu, Hua Tang, Chen Chen

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 22, 2024

Abstract Solution‐processed bulk heterojunction (BHJ) organic solar cells (OSCs) have emerged as a promising next‐generation photovoltaic technology. In this emerging field, there is growing trend of employing solid additives (SAs) to fine‐tune the BHJ morphology and unlock full potential OSCs. SA engineering offers several significant benefits for commercialization, including ability i) control film‐forming kinetics expedite high‐throughput fabrication, ii) leverage weak noncovalent interactions between materials enhance efficiency stability OSCs, iii) simplify procedures facilitate cost‐effective production scaling‐up. These features make key catalyst accelerating development Recent breakthroughs shown that can achieve an 19.67% in single‐junction demonstrating its effectiveness promoting commercialization devices. This review provides comprehensive overview pivotal contributions SAs, focusing on their roles governing dynamics, stabilizing phase separation, addressing other crucial aspects. The rationale design rules SAs highly efficient stable OSCs are also discussed. Finally, remaining challenges summarized, perspectives future advances offered.

Language: Английский

Citations

12
Crossbreeding Effect of Chalcogenation and Iodination on Benzene Additives Enables Optimized Morphology and 19.68% Efficiency of Organic Solar Cells DOI Creative Commons
Tao Zhou, Wenwen Jin, Yinfeng Li

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(23)

Published: March 25, 2024

Abstract Volatile solid additives have attracted increasing attention in optimizing the morphology and improving performance of currently dominated non‐fullerene acceptor‐based organic solar cells (OSCs). However, underlying principles governing rational design volatile remain elusive. Herein, a series efficient are successfully developed by crossbreeding effect chalcogenation iodination for photovoltaic performances OSCs. Five benzene derivatives 1,4‐dimethoxybenzene (DOB), 1‐iodo‐4‐methoxybenzene (OIB), 1‐iodo‐4‐methylthiobenzene (SIB), 1,4‐dimethylthiobenzene (DSB) 1,4‐diiodobenzene (DIB) systematically studied, where widely used DIB is as reference. The on overall property comprehensively investigated, which indicates that versatile functional groups provided various types noncovalent interactions with host materials modulating morphology. Among them, SIB combination sulphuration enabled more appropriate blend, giving rise to highly ordered molecular packing favorable As result, binary OSCs based PM6:L8‐BO PBTz‐F:L8‐BO well ternary PBTz‐F:PM6:L8‐BO achieved impressive high PCEs 18.87%, 18.81% 19.68%, respectively, among highest values

Language: Английский

Citations

10
Developing Benzodithiophene-Free donor polymer for 19.36% efficiency Green-Solvent-Processable organic solar cells DOI

Ying He,

Wenwen Jing,

Chentong Liao

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 490, P. 151920 - 151920

Published: May 5, 2024

Language: Английский

Citations

6
Utilization of Polycyclic Aromatic Solid Additives for Morphology and Thermal Stability Enhancement in Photoactive Layers of Organic Solar Cells DOI
Jianing Xu, Chengyi Xiao, Zhou Zhang

et al.

Small, Journal Year: 2024, Volume and Issue: 20(46)

Published: Aug. 6, 2024

Abstract Volatile solid additives have emerged as a promising strategy for enhancing film morphology and promoting the power conversion efficiency (PCE) of organic solar cells (OSCs). Herein, series novel polycyclic aromatic with analogous chemical structures, including fluorene (FL), dibenzothiophene (DBT), dibenzofuran (DBF) derived from crude oils, are presented incorporated into OSCs. All these exhibit strong interactions electron‐deficient terminal groups L8‐BO within bulk‐heterojunction Moreover, they demonstrate significant sublimation during thermal annealing, leading to increase free volumes rearrangement recrystallization L8‐BO. This phenomenon leads an improved elevated glass‐transition temperature photoactive layers. Consequently, PCE PM6:L8‐BO blend has been boosted 16.60% 18.60% 40 wt% DBF additives, champion 19.11% achieved ternary PM6:L8‐BO:BTP‐eC9 Furthermore, prolonged shelf stability observed in OSCs additives. study emphasizes synergic effect volatile on performance OSCs, highlighting their potential advancing field photovoltaics.

Language: Английский

Citations

5
Solid additive for manipulating the lamellar-stacking phases of donor and π-stacking phases of acceptor and its recycling implementation in organic solar cells DOI
Yeo Hyung Kim, Seoyoung Kim, Seunglok Lee

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 158329 - 158329

Published: Dec. 1, 2024

Language: Английский

Citations

5