Impact of symmetry-breaking of non-fullerene acceptors for efficient and stable organic solar cells DOI Creative Commons
Peddaboodi Gopikrishna, Huijeong Choi,

Do Hui Kim

et al.

Chemical Science, Journal Year: 2021, Volume and Issue: 12(42), P. 14083 - 14097

Published: Jan. 1, 2021

The concurrent enhancement of short-circuit current (JSC) and open-circuit voltage (VOC) is a key problem in the preparation efficient organic solar cells (OSCs). In this paper, we report stable OSCs based on an asymmetric non-fullerene acceptor (NFA) IPC-BEH-IC2F. NFA consists weak electron-donor core dithienothiophen[3,2-b]-pyrrolobenzothiadiazole (BEH) two kinds strong electron-acceptor (A) units [9H-indeno[1,2-b]pyrazine-2,3-dicarbonitrile (IPC) with tricyclic fused system 2-(5,6-difluoro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile (IC2F)]. For comparison, symmetric NFAs IPC-BEH-IPC IC2F-BEH-IC2F were characterised. kind flanking A unit significantly affects light absorption features electronic structures NFAs. IPC-BEH-IC2F has highest extinction coefficient among three owing to its dipole moment highly crystalline feature. Its occupied molecular orbital (HOMO) lowest unoccupied (LUMO) levels lie between those molecules. IPC group also promotes packing through π-conjugated achieves increased crystallinity compared that IC2F group. Inverted-type photovoltaic devices p-type polymer:NFA blends PBDB-T PM6 polymers as fabricated. Among all these devices, PBDB-T:IPC-BEH-IC2F blend device displayed best properties because provides balanced morphological characteristics. More importantly, PBDB-T:IPC-BEH-IC2F-based exhibited long-term stability strongly interacting moiety densely packed film. These results demonstrate structural modifications are effective way for simultaneously improving performance OSCs.

Language: Английский

Polythiophenes for organic solar cells with efficiency surpassing 17% DOI Creative Commons

Xiyue Yuan,

Yunli Zhao,

Dongsheng Xie

et al.

Joule, Journal Year: 2022, Volume and Issue: 6(3), P. 647 - 661

Published: March 1, 2022

Language: Английский

Citations

163
Recent Developments of Polymer Solar Cells with Photovoltaic Performance over 17% DOI
Jianghao Jin,

Qiao Wang,

Kaige Ma

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(14)

Published: Jan. 22, 2023

Abstract With the emergence of ADA'DA‐type (Y‐series) non‐fullerene acceptors (NFAs), power conversion efficiencies (PCEs) organic photovoltaic devices have been constantly refreshed and gradually reached 20% in recent years (19% for single junction tandem device). The possess specific design concept, which greatly enrich NFA types excellent compatibility with many donor materials. It is gratifying to note that previously underperforming materials combine these regulated shine again. Nowadays, concept modular widely used research donors, injecting new vitality into field photovoltaics. Furthermore, also promote multicomponent devices, bilayer processing solvent engineering, additive engineering. Herein, latest progresses polymer solar cells efficiency over 17% are briefly reviewed from aspects active material design, interface development, device technology. At last, opportunities challenges commercialization future discussed.

Language: Английский

Citations

74
Dithienoquinoxalineimide‐Based Polymer Donor Enables All‐Polymer Solar Cells Over 19 % Efficiency DOI
Zongtao Wang, Xin Wang,

Lijun Tu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(21)

Published: Feb. 22, 2024

All-polymer solar cells (all-PSCs) have been regarded as one of the most promising candidates for commercial applications owing to their outstanding advantages such mechanical flexibility, light weight and stable film morphology. However, compared large amount new-emerging excellent polymer acceptors, development high-performance donor lags behind. Herein, a new D-π-A type donor, namely QQ1, was developed based on dithienoquinoxalineimide (DTQI) A unit, benzodithiophene with thiophene-conjugated side chains (BDTT) D alkyl-thiophene π-bridge, respectively. QQ1 not only possesses strong dipole moment, but also shows wide band gap 1.80 eV deep HOMO energy level -5.47 eV, even without halogen substituents that are commonly indispensable donors. When blended classic acceptor PY-IT, QQ1-based all-PSC delivers an PCE 18.81 %. After introduction F-BTA3 third component, record 19.20 % obtained, highest value reported so far all-PSCs. The impressive photovoltaic performance originates from broad absorption range, reduced loss, compact π-π stacking. These results provide insight in rational design novel nonhalogenated donors further

Language: Английский

Citations

67
Poly(dimethylsiloxane)‐block‐PM6 Polymer Donors for High‐Performance and Mechanically Robust Polymer Solar Cells DOI
Soodeok Seo, Jin‐Woo Lee, Dong Jun Kim

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(24)

Published: March 17, 2023

High power conversion efficiency (PCE) and stretchability are the dual requirements for wearable application of polymer solar cells (PSCs). However, most efficient photoactive films mechanically brittle. In this work, highly (PCE = 18%) robust (crack-onset strain (COS) PSCs acheived by designing block copolymer (BCP) donors, PM6-b-PDMSx (x 5k, 12k, 19k). these BCP stretchable poly(dimethylsiloxane) (PDMS) blocks covalently linked with PM6 to effectively increase stretchability. The donors increases a longer PDMS block, PM6-b-PDMS19k :L8-BO PSC exhibits high PCE (18%) 9-times higher COS value compared that (COS 2%) PM6:L8-BO-based PSC. PM6:L8-BO:PDMS12k ternary blend shows inferior (5%) (1%) due macrophase separation between active components. intrinsically PSC, significantly greater mechanical stability PCE80% ((80% initial PCE) at 36% strain) than those PM6:L8-BO (PCE80% 12% PM6:L8-BO:PDMS 4% strain). This study suggests an effective design strategy PD achieve PSCs.

Language: Английский

Citations

64
Rigid- and soft-block-copolymerized conjugated polymers enable high-performance intrinsically stretchable organic solar cells DOI Creative Commons
Jin‐Woo Lee,

Heung-Goo Lee,

Eun Sung Oh

et al.

Joule, Journal Year: 2023, Volume and Issue: 8(1), P. 204 - 223

Published: Dec. 1, 2023

Language: Английский

Citations

57
Cyano-functionalized pyrazine: an electron-deficient unit as a solid additive enables binary organic solar cells with 19.67% efficiency DOI

Lijun Tu,

Hao Wang,

Weixu Duan

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(10), P. 3365 - 3374

Published: Jan. 1, 2024

A strong electron-deficient unit CNPz as a solid additive was developed in PTQ10/ m -BTP-PhC6 binary organic solar cells. high PCE of 19.67% achieved with significant increase the J SC and FF (81.8%).

Language: Английский

Citations

39
A donor polymer based on 3-cyanothiophene with superior batch-to-batch reproducibility for high-efficiency organic solar cells DOI

Xiyue Yuan,

Yunli Zhao,

Tao Zhan

et al.

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(10), P. 5530 - 5540

Published: Jan. 1, 2021

A donor polymer based on 3-cyanothiophene, a structurally simple unit, is synthesized for organic solar cells, which exhibited prominent power conversion efficiency and excellent batch-to-batch reproducibility in wide molecular weight range.

Language: Английский

Citations

81
Manipulating the solubility properties of polymer donors for high-performance layer-by-layer processed organic solar cells DOI

Haijun Ning,

Qiuju Jiang,

Pengwei Han

et al.

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(11), P. 5919 - 5928

Published: Jan. 1, 2021

This study demonstrates that the solubility properties of polymer donors are vitally important for layer-by-layer processed organic solar cells. Manipulating an NTI-based donor enables 17.59% efficiency a PNTB6-Cl:N3 based device.

Language: Английский

Citations

74
Introducing Low‐Cost Pyrazine Unit into Terpolymer Enables High‐Performance Polymer Solar Cells with Efficiency of 18.23% DOI

Liuyang Zhou,

Lei Meng, Jinyuan Zhang

et al.

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 32(8)

Published: Nov. 8, 2021

Abstract Recently, a random ternary copolymerization strategy has become promising and efficient approach to develop high‐performance polymer donors for solar cells (PSCs). In this study, low‐cost electron‐withdrawing unit, 2,5‐bis(4‐(2‐ethylhexyl)thiophen‐2‐yl)pyrazine (PZ‐T), is incorporated into the backbone of PM6 as third component, three D‐A 1 ‐D‐A 2 type terpolymers PMZ‐10, PMZ‐20, PMZ‐30 are synthesized by strategy, with PZ‐T proportion 10%, 20%, 30%, respectively. The exhibit downshifted highest occupied molecular orbital energy levels than PM6, which beneficial obtaining higher open‐circuit voltage ( V oc ) PSCs donor. Importantly, based on PMZ‐10:Y6 demonstrate exciton dissociation, balanced electron/hole mobilities, desirable aggregation, high power conversion efficiency 18.23%, among terpolymer‐based so far. results indicate that second A‐unit an further improve photovoltaic performance reduce synthetic cost copolymer donors.

Language: Английский

Citations

69
Layered optimization strategy enables over 17.8% efficiency of layer-by-layer organic photovoltaics DOI
Xiaoling Ma,

Qiuju Jiang,

Wenjing Xu

et al.

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 442, P. 136368 - 136368

Published: April 13, 2022

Language: Английский

Citations

62