Non‐Fused Polymerized Small Molecular Acceptors for Efficient All‐Polymer Solar Cells DOI

Baoqi Wu,

Yue Zhang,

Shizeng Tian

et al.

Solar RRL, Journal Year: 2022, Volume and Issue: 6(6)

Published: March 10, 2022

The development of polymer acceptors is critical to promote the power conversion efficiencies (PCEs) all‐polymer solar cells (all‐PSCs). Herein, two novel (PBTz–TT and PFBTz–TT) derived from non‐fused small molecules, which possess synthetic simplicity, narrow optical bandgap, high absorption coefficients, are reported for first time. all‐PSCs fabricated by a layer‐by‐layer deposition technique with PBDB‐T as donor, device performance improved synergistic effect solvent additive thermal annealing. As result, offer PCEs 10.14% 6.85% PFBTz‐TT PBTz‐TT, respectively. Further morphological electrical characterizations unveil that higher originates more efficient exciton separation charge transport result ordered packing in solid state. it demonstrated polymerizing molecular an effective strategy develop high‐performance all‐PSCs.

Language: Английский

Oligomeric Acceptor: A “Two‐in‐One” Strategy to Bridge Small Molecules and Polymers for Stable Solar Devices DOI

Hengtao Wang,

Congcong Cao, Hui Chen

et al.

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(23)

Published: March 21, 2022

Oligomeric acceptors are expected to combine the advantages of both highly developed small molecular and polymeric acceptors. However, organic solar cells (OSCs) based on oligomers lag far behind due their slow development low diversity. Here, three oligomeric were produced through oligomerization molecules. The dimer dBTICγ-EH achieved best power conversion efficiencies (PCEs) 14.48 % in bulk heterojunction devices possessed a T80 (80 initial PCE) lifetime 1020 h under illumination, which better than that More excitingly, it showed PCEs 16.06 quasi-planar (Q-PHJ) is highest value OSCs using date. These results suggest molecules promising strategy achieve with optimized performance between high efficiency durable stability, offer materials bright future commercial applications.

Language: Английский

Citations

131
All‐polymer solar cells with over 16% efficiency and enhanced stability enabled by compatible solvent and polymer additives DOI Creative Commons
Ruijie Ma, Jianwei Yu, Tao Liu

et al.

Aggregate, Journal Year: 2021, Volume and Issue: 3(3)

Published: May 1, 2021

Abstract Considering the robust and stable nature of active layers, advancing power conversion efficiency (PCE) has long been priority for all‐polymer solar cells (all‐PSCs). Despite recent surge PCE, photovoltaic parameters state‐of‐the‐art all‐PSC still lag those polymer:small molecule‐based devices. To compete with counterparts, judicious modulation morphology thus device electrical properties are needed. It is difficult to improve all concurrently all‐PSCs advanced efficiency, one increase typically accompanied by drop other(s). In this work, aids solvent additive (1‐chloronaphthalene) n ‐type polymer (N2200), we can fine‐tune layer demonstrate a 16.04% efficient based on PM6:PY‐IT layer. The grazing incidence wide‐angle X‐ray scattering measurements show that shape crystallites be altered, reshaped lead enhanced more balanced charge transport, reduced recombination, suppressed energy loss, which improved stability.

Language: Английский

Citations

116
π‐Extended Conjugated Polymer Acceptor Containing Thienylene–Vinylene–Thienylene Unit for High‐Performance Thick‐Film All‐Polymer Solar Cells with Superior Long‐Term Stability DOI
Jiabin Zhang, Ching‐Hong Tan, Kai Zhang

et al.

Advanced Energy Materials, Journal Year: 2021, Volume and Issue: 11(48)

Published: Nov. 7, 2021

Abstract Despite the rapid developments in all‐polymer solar cells (all‐PSCs) due to progress of polymerized small molecular acceptors (PSMA), effect linkage unit conjugation on polymer acceptor (P A ) is not well understood and P s with high efficiency, good stability, thickness‐insensitivity are rarely seen. Herein, two novel PSMAs, named PJTVT PJTET designed, by incorporating conjugated thienylene‐vinylene‐thienylene (TVT) unconjugated thienylene–ethyl–thienylene (TET) units, respectively. Results show that energy levels, losses, offset PSMAs have little difference ( <≈ 0.03 eV). However, π‐extended coplanar backbone PJTVT, when blended donor JD40, a more ordered π–π stacking enhanced face‐on orientation morphology observed, which contributes exciton dissociation, superior charge transport, faster extraction, leading record power conversion efficiency 16.13% (10.93% for JD40:PJTET). Impressively, JD40:PJTVT device shows long‐term both make it an ideal choice industrialization. These results demonstrate modulation linking promising strategy construct high‐performance thick‐film all‐PSCs superiority backbones PSMAs.

Language: Английский

Citations

110
16.52% Efficiency All‐Polymer Solar Cells with High Tolerance of the Photoactive Layer Thickness DOI Creative Commons
Wenqing Zhang, Chenkai Sun, Indunil Angunawela

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(20)

Published: March 15, 2022

All-polymer solar cells (all-PSCs) have drawn growing attention and achieved tremendous progress recently, but their power conversion efficiency (PCE) still lags behind small-molecule-acceptor (SMA)-based PSCs due to the relative difficulty on morphology control of polymer photoactive blends. Here, low-cost PTQ10 is introduced as a second donor (a third component) into PM6:PY-IT blend finely tune energy-level matching microscopic layer. The addition decreases π-π stacking distance, increases coherence length ordered face-on molecular packing orientation, which improves charge separation transport in Moreover, deeper highest occupied orbital energy level than PM6 leads higher open-circuit voltage ternary all-PSCs. As result, PCE 16.52% for all-PSCs, one PCEs In addition, devices exhibit high tolerance layer thickness with 15.27% 13.91% at ≈205 ≈306 nm, respectively, are so far all-PSCs thick

Language: Английский

Citations

93
Recent Progress in π-Conjugated Polymers for Organic Photovoltaics: Solar Cells and Photodetectors DOI
Chunchen Liu, Lin Shao, Shihao Chen

et al.

Progress in Polymer Science, Journal Year: 2023, Volume and Issue: 143, P. 101711 - 101711

Published: June 25, 2023

Language: Английский

Citations

78
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
A Random Terpolymer Donor with Similar Monomers Enables 18.28% Efficiency Binary Organic Solar Cells with Well Polymer Batch Reproducibility DOI

Hairui Bai,

Qiaoshi An,

Hong‐Fu Zhi

et al.

ACS Energy Letters, Journal Year: 2022, Volume and Issue: 7(9), P. 3045 - 3057

Published: Aug. 19, 2022

Herein, by using two fluorinated and chlorinated monomers with similar structures in different molar ratios dithieno[3′,2′:3,4;2″,3″:5,6]benzo[1,2-c][1,2,5]thiadiazole (DTBT) as the third unit, a family of polymer donors D18, D18–20%Cl, D18–40%Cl, D18–Cl are synthesized for OSCs. With appropriate monomer proportion, terpolymer D18–20%Cl exhibits proper HOMO energy level higher packing density compared that other control polymers. Moreover, D18–20%Cl:Y6 blend films have favorable morphology better face-on crystallization charge transport. Consequently, D18–20%Cl:Y6-based OSCs obtain top-ranked PCE 18.28% overall improved device parameters to controlled D18:Y6 or D18-Cl:Y6-based (17.50% 17.02%), which represents highest reported terpolymer-based binary Notably, exhibit over 17% efficiency wide molecular weight range. These results demonstrate ternary copolymerization DTBT moieties is an efficient approach achieving well batch-to-batch reproducibility.

Language: Английский

Citations

72
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

64
Recent research progress of all-polymer solar cells based on PSMA-type polymer acceptors DOI Creative Commons
Tao Wang, Mingxia Chen, Rui Sun

et al.

Chem, Journal Year: 2023, Volume and Issue: 9(7), P. 1702 - 1767

Published: June 21, 2023

Language: Английский

Citations

50
Advances in organic solar cells: Materials, progress, challenges and amelioration for sustainable future DOI
Ajay K. Jain, Richa Kothari, V.V. Tyagi

et al.

Sustainable Energy Technologies and Assessments, Journal Year: 2024, Volume and Issue: 63, P. 103632 - 103632

Published: Feb. 14, 2024

Language: Английский

Citations

27