Solution‐Processed Thickness‐Insensitive Molybdenum Oxide Hole‐Transporting Layer Regulated by Reductive Ionic Liquid for Stable and Efficient Organic Solar Cells DOI
Er‐Jia Guo, Qiaomei Chen, Guangcong Zhang

et al.

Small, Journal Year: 2024, Volume and Issue: 21(5)

Published: Dec. 29, 2024

Abstract Developing solution‐processed, thickness‐insensitive hole‐transporting layers (HTLs) is a key challenge in scaling high‐performance organic solar cells (OSCs). Here, simple and efficient method presented to produce highly conductive molybdenum oxide (MoO x ) HTLs by n‐doping ammonium heptamolybdate with reductive ionic liquid (IL). Owing the effect inherent conductivity of IL, 5% IL:MoO significantly increased 8.06 × 10 −3 S m −1 , surpassing traditional solution‐processed MoO HTLs. Moreover, IL's multifunctional non‐covalent adsorption sites high boiling point help reduce electronic disorder passivate parasitic traps, enhancing overall performance. As result, shows excellent versatility commonly used photoactive systems achieves remarkable PCE 19.55% D18:N3:L8‐BO ternary system. This outperforms neat PEDOT:PSS devices represents as highest reported value among single‐junction OSCs Additionally, also exhibit superior stability compared devices. Furthermore, impressive thickness insensitivity, maintaining 83.3% optimum even at 150 nm. The exceptional PCE, versatility, stability, insensitivity HTL collectively highlight its potential substitute for OSC production.

Language: Английский

Recent Progress of Solution‐Processed Thickness‐Insensitive Cathode Interlayers for High‐Performance Organic Solar Cells DOI
Ping Cai, Can Song,

Yating Du

et al.

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

Published: Jan. 5, 2025

Abstract Organic solar cells (OSCs) have shown great applications potential in flexible/wearable electronics, indoor photovoltaics and so on. The efficiencies of single‐junction OSCs exceeded 19%, making the commercialization brighter. Large‐area printing fabrication is a key way to OSCs, solution‐processed thickness‐insensitive cathode interlayers (CILs) are urgently needed for large‐area fabrication. High electron mobility interfacial materials (CIMs) critical enable CILs. N‐type self‐doped characteristics can endow organic CIMs with high mobility. Different type n‐type show different applicability conventional inverted OSCs. External dopants further increase hybrid blends. Particularly, ZnO doped dyes achieve superior photoconductivity This review focuses on CILs high‐performance In small molecules polymers, external n‐doped blends as summarized. small‐molecular electrolytes polyelectrolytes, PEI‐/PEIE‐based (including organic‐organic ZnO‐organic) summarized relationships between particular functions chemical structures highlighted. Finally, summary outlook provided.

Language: Английский

Citations

6
Post-Treatment Free Yttrium Phosphotungstate Anode Interfacial Material for Organic Solar Cells with 20.55% Efficiency DOI

Xingjian Dai,

Ben Fan, Weilin Zhou

et al.

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 2045 - 2051

Published: April 1, 2025

Language: Английский

Citations

3
An n‐Doped Organic Cross‐Linked Electron Transport Layer with High Electrical Conductivity for High‐Efficiency Tandem Organic Photovoltaics DOI Open Access
Yan Xu, Yifan Liao, Wenxuan Wang

et al.

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

Published: March 24, 2025

Abstract With merits of good solution processability, intrinsic flexibility, etc, organic/organic interconnecting layers (ICLs) are highly desirable for tandem organic photovoltaics (OPVs). Herein, an n‐doped cross‐linked electron transport layer (ETL), named c‐NDI‐Br:PEI is developed, via a simple in situ quaternization reaction between bromopentyl‐substituted naphthalene diimide derivative (NDI‐Br) and polyethylenimine (PEI). Due to strong self‐doping, films exhibit high electrical conductivity (0.06 S cm −1 ), which important efficient hole reombination ICL OPVs. In addition, the ETLs show work function modulation ability, solvent‐resistance. The above features enable as ETL not only single‐junction OPVs, but also devices without any metal ICL. Under solar radiation, device with achieves power conversion efficiency (PCE) 18.18%, surpassing ZnO‐based (17.09%). homo‐ hetero‐tandem m‐PEDOT:PSS:c‐NDI‐Br:PEI remarkable PCEs 19.06% 20.06%, respectively. 808 nm laser radiation photon flux 57 mW −2 , homo‐tandem presents superior PCE 38.5%. This study provides new constructing all‐solution‐processed ICL, can be integrated flexible wearable devices.

Language: Английский

Citations

2
Diphosphonic acid-modified PEDOT:PSS for enhanced stability and efficiency in organic solar cells: Achieving 19.5% PCE through PSS erosion mitigation and interface Optimization DOI

Shanlei Xu,

Renyong Geng,

Xingting Liu

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161453 - 161453

Published: March 1, 2025

Language: Английский

Citations

1
Medium‐Bandgap Acceptors for Efficient Ternary Organic Solar Cells Achieved by End‐Group Engineering DOI
Long Chen, Yuanyuan Liu, Huiqiu Deng

et al.

Solar RRL, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

The ternary strategy has been evidenced as one of the most crucial methods to improve photovoltaic performance organic solar cells. However, selection and design third components are decisive factors facilitating progress cells (TOSCs). In this study, focuses concentrated on D18‐Cl:N3 binary host device by developing a weakly electron‐withdrawing end group synthesizing guest acceptor, BTP‐CM, which holds similar backbone N3. structure resemblance ensures good compatibility molecule with N3, improves charge transport reduces recombination. Thereby, D18‐Cl:N3:BTP‐CM‐based TOSC exhibits an improved power conversion efficiency 18.32%, compared 17.13% device. This work provides effective for acceptors, aims introduce new groups obtain molecules complementary absorptions matched energy levels while preserving molecular acceptor.

Language: Английский

Citations

1
Conjugated Group Tuning of Self‐Assembled Monolayer for Efficient Hole‐Transport Layer in Organic Solar Cells DOI

Shuangjiao Gao,

Ruixiang Peng,

Yi Qiu

et al.

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

4
Strategies to achieve efficiencies of over 19% for organic solar cells DOI Creative Commons
Xingchi Xiao,

Malika Chalh,

Zhi Rong Loh

et al.

Cell Reports Physical Science, Journal Year: 2025, Volume and Issue: 6(1), P. 102390 - 102390

Published: Jan. 1, 2025

Language: Английский

Citations

0
Dual Liquid Rubber Matrix Based Highly Efficient and Mechanically Robust Layer‐by‐Layer Organic Solar Cells DOI Creative Commons
Yuchen Liao, Huimin Xiang, Tianyu Hu

et al.

SusMat, Journal Year: 2025, Volume and Issue: unknown

Published: March 7, 2025

ABSTRACT Developing organic solar cells (OSCs) simultaneously possessing high efficiency and robust mechanical properties is one of crucial tasks to ensure their operational reliability applicability for emerging wearable devices. However, enhancing without compromising the electrical high‐performance active materials remains a challenge. This work presents method that overcomes this limitation by embedding dual liquid rubber (DLR) matrix consisting tetra‐fluorophenyl azide penta‐fluorophenyl end‐capped polybutadienes, PFFA PFF, into layer‐by‐layer (LBL) films, which enables finely controlled film morphology built on strong noncovalent interactions cross‐linking chemistry. The resulting LBL demonstrates significantly improved stretchability reduced stiffness layer, with crack initiation strain approximately eight times higher than pristine film. potential DLR strategy demonstrated in PM6:L8‐BO flexible power conversion 17.7%, among highest efficiencies OSCs date. More importantly, also significant bending durability retain 84.2% initial performance after 5000 cycles. design concept offers new achieving highly efficient stretchable OSCs.

Language: Английский

Citations

0
Constructing Controlled Vertical Gradient Morphology in Pseudo‐Planar Heterojunction Organic Photovoltaics via Self‐Assembled Interface Orthogonal Strategy DOI

Lin Wen,

Houdong Mao,

M.K. Ban

et al.

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

Published: April 13, 2025

Abstract Precisely regulating vertically distributed morphology by blade‐coating process is crucial to realize high‐performance large‐scale pseudo‐planar heterojunction organic photovoltaics (OPVs). However, the thermodynamic motion and random diffusion of donor/acceptor (D/A) generated from differences in surface energy concentration during sequentially will cause great challenges for obtaining ideal active layer morphology. Herein, this study have proposed a self‐assembled interface orthogonal strategy introducing low guest (N2200) form protective on PM6 surface, which counteracts erosion solution acceptor enhance continuity D/A phases, thus promoting directional carrier migration effectively suppressing energetic disorder. Finally, N2200‐modified device achieves highest power conversion efficiency (PCE) 19.86%, large‐area module (16.94 cm 2 ) exhibits exceptional PCE (16.43%). This investigation presents innovative insights into issue triggered molecular provides an effective method air‐printing OPVs with precisely controlled based non‐halogenated solvent.

Language: Английский

Citations

0
Utilizing Zinc Oxide and Fluorescent Agent as a Versatile Electron Transport Layer for Highly Efficient and Stable Inverted Polymer Solar Cells DOI
Jin-Xiang Chen, Meng Wang, Ping Cai

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 13, 2025

The development of excellent electron transport layers (ETLs) is crucial for high-performance organic solar cells (OSCs). In this work, we have developed a novel, versatile ETL composed zinc oxide (ZnO) and fluorescent agent to enhance the photovoltaic performance photostability OSCs. Unlike bulk doping ZnO interlayer, use conjugated small-molecule agent, sodium 2,2'-([1,1'-biphenyl]-4,4'-diyldivinylene)-bis(benzenesulfonate) (CBS), modify surface thus construct ZnO/CBS bilayer structure. shows lower work function, which beneficial extraction. Moreover, photoinduced transfer from CBS increases conductivity ZnO. Notably, fluorescence generated by can also be quenched active layer, indicating existence exciton or charge between layer. bidirectional layer synergistically improves enhances performance. Consequently, PM6:eC9 PM6:L8-BO based OSCs with as achieve power conversion efficiencies 17.42 18.16%, respectively, are among highest levels in inverted thickness insensitivity PM6:eC9-based still exhibit high PCE 15.66% at thick-film 130 nm 20 CBS. addition, modification efficiently blocks ultraviolet light reduces catalytic activity thereby enhancing

Language: Английский

Citations

0