Multiphase Morphology with Enhanced Carrier Lifetime via Quaternary Strategy Enables High‐Efficiency, Thick‐Film, and Large‐Area Organic Photovoltaics DOI
Lingling Zhan, Shouchun Yin,

Yaokai Li

и другие.

Advanced Materials, Год журнала: 2022, Номер 34(45)

Опубликована: Сен. 15, 2022

With the continuous breakthrough of efficiency organic photovoltaics (OPVs), their practical applications are on agenda. However, thickness tolerance and upscaling in recently reported high-efficiency devices remains challenging. In this work, multiphase morphology desired carrier behaviors realized by utilizing a quaternary strategy. Notably, exciton separation, mobility, lifetime enhanced significantly, recombination energy loss (Eloss ) reduced, thus beneficial for higher short-circuit density (JSC ), fill factor (FF), open-circuit voltage (VOC system. Moreover, intermixing-phase size is optimized, which favorable constructing thick-film large-area devices. Finally, device with 110 nm-thick active layer shows an outstanding power conversion (PCE) 19.32% (certified 19.35%). Furthermore, (1.05 72.25 cm2 nm present PCEs 18.25% 12.20%, 305 film (0.0473 delivers PCE 17.55%, among highest values reported. The work demonstrates potential strategy OPVs promotes application future.

Язык: Английский

Single‐Junction Organic Photovoltaic Cell with 19% Efficiency DOI
Yong Cui, Ye Xu, Huifeng Yao

и другие.

Advanced Materials, Год журнала: 2021, Номер 33(41)

Опубликована: Авг. 31, 2021

Abstract Improving power conversion efficiency (PCE) is important for broadening the applications of organic photovoltaic (OPV) cells. Here, a maximum PCE 19.0% (certified value 18.7%) achieved in single‐junction OPV cells by combining material design with ternary blending strategy. An active layer comprising new wide‐bandgap polymer donor named PBQx‐TF and low‐bandgap non‐fullerene acceptor (NFA) eC9‐2Cl rationally designed. With optimized light utilization, resulting binary cell exhibits good 17.7%. NFA F‐BTA3 then added to as third component simultaneously improve parameters. The improved unitization, cascaded energy level alignment, enhanced intermolecular packing result open‐circuit voltage 0.879 V, short‐circuit current density 26.7 mA cm −2 , fill factor 0.809. This study demonstrates that further improvement PCEs high‐performance requires fine tuning electronic structures morphologies layers.

Язык: Английский

Процитировано

1336

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

и другие.

Chemical Reviews, Год журнала: 2022, Номер 122(18), С. 14180 - 14274

Опубликована: Авг. 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.

Язык: Английский

Процитировано

678

Reduced non-radiative charge recombination enables organic photovoltaic cell approaching 19% efficiency DOI Creative Commons
Pengqing Bi, Shaoqing Zhang, Zhihao Chen

и другие.

Joule, Год журнала: 2021, Номер 5(9), С. 2408 - 2419

Опубликована: Июль 23, 2021

Язык: Английский

Процитировано

508

Organic Solar Cells with 18% Efficiency Enabled by an Alloy Acceptor: A Two‐in‐One Strategy DOI
Feng Liu, Liang Zhou, Wenrui Liu

и другие.

Advanced Materials, Год журнала: 2021, Номер 33(27)

Опубликована: Май 28, 2021

Abstract The trade‐off between the open‐circuit voltage ( V oc ) and short‐circuit current density J sc has become core of organic photovoltaic research, realizing minimum energy offsets that can guarantee effective charge generation is strongly desired for high‐performance systems. Herein, a ternary solar cell with power conversion efficiency over 18% using large‐bandgap polymer donor, PM6, small‐bandgap alloy acceptor containing two structurally similar nonfullerene acceptors (Y6 AQx‐3) reported. This system take full advantage irradiation forms favorable morphology. By varying ratio acceptors, delicate regulation levels achieved, thereby affecting dynamics in devices. optimal device exhibits more efficient hole transfer exciton separation than PM6:AQx‐3‐based reduced loss compared PM6:Y6‐based system, contributing to better performance. Such “two‐in‐one” strategy, which synergizes highly compatible provides promising path boosting performance

Язык: Английский

Процитировано

436

Manipulating the D:A interfacial energetics and intermolecular packing for 19.2% efficiency organic photovoltaics DOI

Chengliang He,

Youwen Pan,

Yanni Ouyang

и другие.

Energy & Environmental Science, Год журнала: 2022, Номер 15(6), С. 2537 - 2544

Опубликована: Янв. 1, 2022

A novel electron acceptor, BTP-H2, demonstrates a high efficiency of 18.5% with V oc 0.932 V. It also enables the ternary device to yield an 19.2%, ranking highest among single-junction organic photovoltaics.

Язык: Английский

Процитировано

414

A Well‐Mixed Phase Formed by Two Compatible Non‐Fullerene Acceptors Enables Ternary Organic Solar Cells with Efficiency over 18.6% DOI

Yunhao Cai,

Yun Li, Rui Wang

и другие.

Advanced Materials, Год журнала: 2021, Номер 33(33)

Опубликована: Июль 10, 2021

Abstract The ternary strategy, introducing a third component into binary blend, opens simple and promising avenue to improve the power conversion efficiency (PCE) of organic solar cells (OSCs). judicious selection an appropriate component, without sacrificing photocurrent voltage output OSC, is significant importance in devices. Herein, highly efficient OSCs fabricated using approach are demonstrated, wherein novel non‐fullerene acceptor L8‐BO‐F designed incorporated PM6:BTP‐eC9 blend. three components show complementary absorption spectra cascade energy alignment. BTP‐eC9 found form homogeneous mixed phase, which improves molecular packing both donor materials, optimizes blend morphology. Moreover, addition suppresses non‐radiative recombination, thus leading reduced loss. Consequently, concurrent increases open‐circuit voltage, short‐circuit current, fill factor realized, resulting unprecedented PCE 18.66% (certified value 18.2%), represents highest values reported for single‐junction tandem so far.

Язык: Английский

Процитировано

412

Polymerized Small‐Molecule Acceptors for High‐Performance All‐Polymer Solar Cells DOI
Zhiguo Zhang, Yongfang Li

Angewandte Chemie International Edition, Год журнала: 2020, Номер 60(9), С. 4422 - 4433

Опубликована: Авг. 28, 2020

Abstract All‐polymer solar cells (all‐PSCs) have drawn tremendous research interest in recent years, due to their inherent advantages of good film formation, stable morphology, and mechanical flexibility. The most representative widely used n ‐CP acceptor was the naphthalene diimide based D‐A copolymer N2200 before 2017, power conversion efficiency (PCE) all‐PSCs on reached over 8% 2016. However, low absorption coefficient near‐infrared (NIR) region limits further increase its PCE. In we proposed a strategy polymerizing small‐molecule acceptors (SMAs) construct new‐generation polymer acceptors. polymerized SMAs (PSMAs) possess band gap strong NIR region, which attracted great attention drove PCE 15% recently. this Minireview explain design strategies molecular structure PSMAs describe progress. Finally, current challenges future prospects are analyzed discussed.

Язык: Английский

Процитировано

407

Achieving 19% Power Conversion Efficiency in Planar‐Mixed Heterojunction Organic Solar Cells Using a Pseudosymmetric Electron Acceptor DOI
Wei Gao, Qi Feng, Zhengxing Peng

и другие.

Advanced Materials, Год журнала: 2022, Номер 34(32)

Опубликована: Июнь 20, 2022

A record power conversion efficiency (PCE) of over 19% is realized in planar-mixed heterojunction (PMHJ) organic solar cells (OSCs) by adopting the asymmetric selenium substitution strategy making a pseudosymmetric electron acceptor, BS3TSe-4F. The combined molecular asymmetry with more polarizable increases dielectric constant D18/BS3TSe-4F blend, helping lower exciton binding energy. On other hand, dimer packing BS3TSe-4F facilitated to enable free charge generation, efficient dissociation and lowering radiative recombination loss (ΔE2 ) OSCs. As result, PMHJ OSCs based on achieve PCE 18.48%. By incorporating another mid-bandgap acceptor Y6-O into form ternary PMHJ, higher open-circuit voltage (VOC can be achieved realize an impressive 19.03%. findings using acceptors enhancing device provides effective way develop highly materials for

Язык: Английский

Процитировано

401

The role of charge recombination to triplet excitons in organic solar cells DOI
Alexander J. Gillett, Alberto Privitera, Rishat Dilmurat

и другие.

Nature, Год журнала: 2021, Номер 597(7878), С. 666 - 671

Опубликована: Сен. 29, 2021

Язык: Английский

Процитировано

340

Binary Organic Solar Cells with 19.2% Efficiency Enabled by Solid Additive DOI
Jianqiu Wang, Yafei Wang, Pengqing Bi

и другие.

Advanced Materials, Год журнала: 2023, Номер 35(25)

Опубликована: Март 25, 2023

Morphology optimization is critical for achieving high efficiency and stable bulk-heterojunction (BHJ) organic solar cells (OSCs). Herein, the use of 3,5-dichlorobromobenzene (DCBB) with volatility low cost to manipulate evolution BHJ morphology improve operability photostability OSCs proposed. Systematic simulations reveal charge distribution DCBB its non-covalent interaction active layer materials. The addition can effectively tune aggregation PBQx-TF:eC9-2Cl during film formation, resulting in a favorable phase separation reinforced molecular packing. As result, power conversion 19.2% (certified as 19.0% by National Institute Metrology) DCBB-processed PBQx-TF:eC9-2Cl-based OSCs, which highest reported value binary obtained. Importantly, devices exhibit superior have thus considerable application potential printing large-area devices, demonstrating outstanding universality various systems. study provides facile approach control enhances photovoltaic performance OSCs.

Язык: Английский

Процитировано

334