Improved photovoltaic performance and robustness of all-polymer solar cells enabled by a polyfullerene guest acceptor DOI Creative Commons
Han Yu, Yan Wang,

Xinhui Zou

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: April 22, 2023

Abstract Fullerene acceptors typically possess excellent electron-transporting properties and can work as guest components in ternary organic solar cells to enhance the charge extraction efficiencies. However, conventional fullerene small molecules suffer from undesirable segregation dimerization, thus limiting their applications cells. Herein we report use of a poly(fullerene- alt -xylene) acceptor (PFBO-C12) component enables significant efficiency increase 16.9% for binary 18.0% all-polymer Ultrafast optic optoelectronic studies unveil that PFBO-C12 facilitate hole transfer suppress recombination. Morphological investigations show blends maintain favorable morphology with high crystallinity smaller domain size. Meanwhile, introduction reduces voltage loss light stability mechanical durability flexible devices. This demonstrates introducing polyfullerenes is an effective approach achieving highly efficient good robustness.

Language: Английский

Renewed Prospects for Organic Photovoltaics DOI
Guichuan Zhang, Francis Lin, Qi Feng

et al.

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(18), P. 14180 - 14274

Published: Aug. 5, 2022

Organic photovoltaics (OPVs) have progressed steadily through three stages of photoactive materials development: (i) use poly(3-hexylthiophene) and fullerene-based acceptors (FAs) for optimizing bulk heterojunctions; (ii) development new donors to better match with FAs; (iii) non-fullerene (NFAs). The application NFAs an A–D–A configuration (where A = acceptor D donor) has enabled devices efficient charge generation small energy losses (Eloss < 0.6 eV), resulting in substantially higher power conversion efficiencies (PCEs) than FA-based devices. discovery Y6-type (Y6 2,2′-((2Z,2′Z)-((12,13-bis(2-ethylhexyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]-thiadiazolo[3,4-e]-thieno[2″,3″:4′,5′]thieno-[2′,3′:4,5]pyrrolo-[3,2-g]thieno-[2′,3′:4,5]thieno-[3,2-b]indole-2,10-diyl)bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile) A–DA′ D–A further propelled the PCEs go beyond 15% due smaller Eloss values (∼0.5 eV) external quantum efficiencies. Subsequently, Y6-series single-junction increased >19% may soon approach 20%. This review provides update recent progress OPV following aspects: developments novel donors, understanding structure–property relationships underlying mechanisms state-of-the-art OPVs, tasks underpinning commercialization such as device stability, module development, potential applications, high-throughput manufacturing. Finally, outlook prospects section summarizes remaining challenges technology.

Language: Английский

Citations

678
Recent progress in organic solar cells (Part I material science) DOI
Yahui Liu, Bowen Liu, Chang‐Qi Ma

et al.

Science China Chemistry, Journal Year: 2021, Volume and Issue: 65(2), P. 224 - 268

Published: Dec. 27, 2021

Language: Английский

Citations

511
Achieving over 17% efficiency of ternary all-polymer solar cells with two well-compatible polymer acceptors DOI Creative Commons
Rui Sun, Wei Wang, Han Yu

et al.

Joule, Journal Year: 2021, Volume and Issue: 5(6), P. 1548 - 1565

Published: April 23, 2021

Language: Английский

Citations

343
High Efficiency (15.8%) All-Polymer Solar Cells Enabled by a Regioregular Narrow Bandgap Polymer Acceptor DOI
Huiting Fu, Yuxiang Li, Jianwei Yu

et al.

Journal of the American Chemical Society, Journal Year: 2021, Volume and Issue: 143(7), P. 2665 - 2670

Published: Feb. 10, 2021

Despite the significant progresses made in all-polymer solar cells (all-PSCs) recently, relatively low short-circuit current density (Jsc) and large energy loss are still quite difficult to overcome for further development. To address these challenges, we developed a new class of narrow-bandgap polymer acceptors incorporating benzotriazole (BTz)-core fused-ring segment, named PZT series. Compared commonly used benzothiadiazole (BT)-containing PYT, less electron-deficient BTz renders derivatives with significantly red-shifted optical absorption up-shifted levels, leading simultaneously improved Jsc open-circuit voltage resultant all-PSCs. More importantly, regioregular (PZT-γ) has been achieve higher regiospecificity avoiding formation isomers during polymerization. Benefiting from more extended absorption, better backbone ordering, optimal blend morphology donor component, PZT-γ-based all-PSCs exhibit record-high power conversion efficiency 15.8% greatly enhanced 24.7 mA/cm2 0.51 eV.

Language: Английский

Citations

292
Organic solar cells using oligomer acceptors for improved stability and efficiency DOI
Youcai Liang, Difei Zhang,

Zerun Wu

et al.

Nature Energy, Journal Year: 2022, Volume and Issue: 7(12), P. 1180 - 1190

Published: Nov. 10, 2022

Language: Английский

Citations

277
16% efficiency all-polymer organic solar cells enabled by a finely tuned morphology via the design of ternary blend DOI Creative Commons
Tao Liu, Tao Yang, Ruijie Ma

et al.

Joule, Journal Year: 2021, Volume and Issue: 5(4), P. 914 - 930

Published: March 7, 2021

Language: Английский

Citations

266
Low-Bandgap Non-fullerene Acceptors Enabling High-Performance Organic Solar Cells DOI
Wei Liu, Xiang Xu, Jun Yuan

et al.

ACS Energy Letters, Journal Year: 2021, Volume and Issue: 6(2), P. 598 - 608

Published: Jan. 21, 2021

Great progress in organic solar cells (OSCs) has been recently achieved owing to the advent of non-fullerene acceptors (NFAs). Indeed, low-bandgap NFAs ranging from 1.3 1.6 eV with broad absorption and easily tunable energy levels can utilize more radiation maintain a small voltage loss when paired suitable donors. Efficient OSCs are dependent on good compatibility between donor acceptor materials, active layer morphology control, device engineering. In this review, we summarize some design synthesis strategies for NFAs, achieving low bandgap high power conversion efficiency. We also propose solutions toward innovative materials engineering advance development applications OSCs.

Language: Английский

Citations

216
A New Polymer Donor Enables Binary All‐Polymer Organic Photovoltaic Cells with 18% Efficiency and Excellent Mechanical Robustness DOI
Jingwen Wang, Yong Cui, Ye Xu

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(35)

Published: July 15, 2022

The development of polymerized small-molecule acceptors has boosted the power conversion efficiencies (PCEs) all-polymer organic photovoltaic (OPV) cells to 17%. However, polymer donors suitable for OPV are still lacking, restricting further improvement their PCEs. Herein, a new donor named PQM-Cl is designed and its performance explored. negative electrostatic potential low average local ionization energy distribution surface enable efficient charge generation transfer process. When blending with well-used acceptor, PY-IT, PQM-Cl-based devices deliver an impressive PCE 18.0% superior fill factor 80.7%, both which highest values cells. relevant measurements demonstrate that films possess excellent mechanical flexible properties. As such, fabricated 16.5% high stability displayed. These results candidate provide insights into design high-efficient

Language: Английский

Citations

214
A Vinylene‐Linker‐Based Polymer Acceptor Featuring a Coplanar and Rigid Molecular Conformation Enables High‐Performance All‐Polymer Solar Cells with Over 17% Efficiency DOI
Han Yu, Yan Wang, Ha Kyung Kim

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(27)

Published: March 22, 2022

State-of-art Y-series polymer acceptors are typically based on a mono-thiophene linker, which can cause some twisted molecular conformations and thus limit the performance of all-polymer solar cells (all-PSCs). Here, high-performance acceptor vinylene linkers is reported, leads to surprising changes in polymers' conformations, optoelectronic properties, enhanced photovoltaic performance. It found that thiophene or bithiophene (PY-T-γ PY-2T-γ) display significant twisting between end-groups linker units, while vinylene-based (PY-V-γ) exhibits more coplanar rigid conformation. As result, PY-V-γ demonstrates better conjugation tighter interchain stacking, results higher mobility reduced energetic disorder. Furthermore, detailed morphology investigations reveal PY-V-γ-based blend high domain purity fill factor its all-PSCs. With these, efficiency 17.1% achieved all-PSCs, highest reported for binary all-PSCs date. This work vinylene-linker superior unit build with chain conformation, beneficial aggregation efficient

Language: Английский

Citations

205
All-polymer organic solar cells with nano-to-micron hierarchical morphology and large light receiving angle DOI Creative Commons
Rui Zeng, Lei Zhu, Ming Zhang

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: July 12, 2023

Abstract Distributed photovoltaics in living environment harvest the sunlight different incident angles throughout day. The development of planer solar cells with large light-receiving angle can reduce requirements installation form factor and is therefore urgently required. Here, thin film organic nano-sized phase separation integrated micro-sized surface topology demonstrated as an ideal solution to proposed applications. All-polymer cells, by means a newly developed sequential processing, show magnitude hierarchical morphology facilitated exciton-to-carrier conversion. nano fibrilar donor-acceptor network micron-scale optical field trapping structure combination contributes efficiency 19.06% (certified 18.59%), which highest value date for all-polymer cells. Furthermore, micron-sized also angle. A 30% improvement power gain achieved comparing flat-morphology devices. These inspiring results that cell features are particularly suitable commercial applications distributed due its low requirement.

Language: Английский

Citations

203