Advancing all-polymer solar cells with solid additives DOI Creative Commons
Xiaobai Ma, Qiang Fu, Jinwei Chen

et al.

Science China Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

Abstract All-polymer solar cells (all-PSCs) have attracted significant research attention in recent years, primarily due to their advantages of outstanding photo-thermal stability and excellent mechanical flexibility. However, all-PSCs typically exhibit complex morphologies during the film formation blend films, tendency become entangled polymer chains, negatively impacting fill factor (FF) morphology stability. Therefore, optimization co-mingled heterojunction is crucial for improving device performance. Recent studies reveal that solid additives (SAs) can realize regulation molecular aggregation state, packing, domain size active layer, which not only improves exciton dissociation, charge transport collection process but also ultimately realizes enhancement efficiency. this review provides an in-depth insight into different mechanisms all-PSCs, offering a comprehensive discussion on progress optimizing enhancing Finally, we present outlook further structural modification strategies towards better bulk paving way achieving stability, superior flexibility, high-efficiency all-PSCs.

Language: Английский

Extending Exciton Diffusion Length via an Organic‐Metal Platinum Complex Additive for High‐Performance Thick‐Film Organic Solar Cells DOI Open Access

Wentao Zou,

Yanna Sun, Lei Sun

et al.

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

Published: Jan. 6, 2025

The long exciton diffusion length (LD) plays an important role in promoting dissociation, suppressing charge recombination, and improving the transport process, thereby performance of organic solar cells (OSCs), especially thick-film OSCs. However, limited LD hinders further improvement device as film thickness increases. Here, organic-metal platinum complex, namely TTz-Pt, is synthesized served a solid additive into D18-Cl:L8-BO system. addition TTz-Pt enhanced crystallinity blends, reduced energy disorder, trap density, decreased non-radiative recombination binding energy, which conducive to prolonging TTz-Pt-treated film, facilitating dissociation process along with inhibiting recombination. Consequently, D18:L8-BO:IDIC (100 nm) exhibits champion power conversion efficiency (PCE) 20.12% (certified 19.54%), one highest PCEs reported for OSCs date. Remarkably, record-breaking PCE 18.84% yielded active layer 300 nm. Furthermore, superior universality This work provides simple universal approach extending by introducing complex achieve highly efficient

Language: Английский

Citations

5
Breaking 20% Efficiency of all‐Polymer Solar Cells via Benzo[1,2‐d:4,5‐d′]Bisthiazole‐Based Terpolymer Donor Strategy for Fine Morphology Optimization DOI Open Access

Wuke Qiu,

Chentong Liao,

Yinfeng Li

et al.

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

Published: March 15, 2025

Abstract Developing high‐performance all‐polymer solar cells (all‐PSCs) remains a challenge due to the difficulty in controlling morphology of polymer blends. In this study, benzo[1,2‐d:4,5‐d′]bisthiazole (BBTz) is incorporated into PM6 main chain create series terpolymer donors, leveraging entropy increase and superior miscibility with acceptors modulate blend morphology. The introduction BBTz broadened absorption range, enhanced film crystallinity, significantly improved donor‐acceptor through its low dipole moment high electrostatic potential. This facilitated formation nanofiber structures active layer, thus optimizing As result, PBZ‐10:PY‐IT‐based device achieved an impressive power conversion efficiency (PCE) 19.06%. Incorporation PBQx‐TF binary can further improve morphology, charge transport, exciton lifetime, dissociation, collection, as well suppressed recombination, finally leading record‐breaking PCE 20.04% for all‐PSCs date. findings demonstrate effectiveness strategy enhancing all‐PSC performance. By molecular design component selection, approach provides viable pathway achieving higher supports advancement renewable energy technologies.

Language: Английский

Citations

2
A systematic investigation on pyridine derived solid additives inducing fibrillar morphology for highly efficient organic solar cells with over 20 % efficiency DOI Creative Commons
Kai Chen,

Weixu Duan,

Lang Zhou

et al.

Materials Science and Engineering R Reports, Journal Year: 2025, Volume and Issue: 164, P. 100977 - 100977

Published: March 18, 2025

Language: Английский

Citations

2
Volatile Imide Additives with Large Dipole and Special Film Formation Kinetics Enable High‐Performance Organic Solar Cells DOI Open Access

Shuangshuang Xia,

Jie Xu, Zongtao Wang

et al.

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Large dipole moment additives have strong interactions with the host materials, which can optimize morphology and improve photovoltaic performance of organic solar cells (OSCs). However, these are difficult to remove due their intermolecular interactions, may impair stability. Developing volatile large moments is challenging. Herein, we first report imide that could effectively OSCs through modification. Three N-(o-chlorophenyl)phthalimide (oClPA), N-(m-chlorophenyl)phthalimide (mClPA), N-(p-chlorophenyl)phthalimide (pClPA) were screened investigate effort positional isomerization on molecular configuration interaction. These (ClPAs) larger (2.0664 Debye for oClPA, 4.2361 mClPA, 4.7896 pClPA) compared reported solid additives. In contrast traditional simultaneous nucleation crystal growth, ClPAs induce acceptor nucleate then grow, contributes forming high-quality domains better crystallinity. To our knowledge, this unique film formation kinetics was first. The power conversion efficiency (PCE) based PM6:BTP-eC9 treated pClPA improved from 16.13 % 18.58 %. Additive also performed well in PM6:L8-BO, PM6:Y6, D18:L8-BO systems, a high PCE 19.04 achieved. Our results indicate using unit construct simple effective strategy, halogen atom has effect performance.

Language: Английский

Citations

1
Synergistically Halogenated and Methoxylated Thiophene Additive Enables High‐Performance Organic Solar Cells DOI Open Access
Xue Jiang, Peihao Huang,

Kaihuai Tu

et al.

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

Published: Jan. 7, 2025

Abstract Morphology control plays a key role for improving efficiency and stability of bulk heterojunctions (BHJ) organic solar cells (OSCs). Halogenation methoxylation are two separate ways successfully adopted in additives morphology optimization. In this work, these strategies combined together. A series halogenated methoxylated thiophenes is designed synthesized as volatile to the evolution BHJ morphology. Specifically, addition 2,5‐diiodo‐3,4‐dimethoxythiophene (MT‐I) prominently improves performance photostability OSCs. Computational simulations reveal noncovalent interactions MT‐I with active layer materials that corresponds inhibition excessive aggregation behavior PM6 Y6 during film‐forming process, facilitating favorable phase separation enhanced molecular stacking. Consequently, PM6:Y6‐based binary OSCs treatment achieves high PCE 17.93%. Furthermore, demonstrates broad feasibility across diverse high‐efficiency OSCs, leading superior photovoltaic (PCE over 18%). This study offers valuable guidance design application high‐performance future endeavors.

Language: Английский

Citations

0
Strategies and Mechanisms To Minimize Energy Loss in Non-Fullerene Bulk Heterojunction Organic Solar Cells: Experimental and Computational Approaches DOI
Hemraj Dahiya, Rakesh Suthar, Supravat Karak

et al.

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Language: Английский

Citations

0
Alkyl Side Chain Modulation of Non‐Fused Polymerized Small Molecular Acceptors for Efficient All‐Polymer Solar Cells DOI
Zhili Chen,

Baoqi Wu,

Bingyan Yin

et al.

Macromolecular Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Abstract Optimizing the morphology within blends of polymer donors and acceptors is crucial for enhancing performance all‐polymer solar cells (all‐PSCs). Therefore, development rational strategies to modulate aggregation behavior polymers, thereby driving formation favorable morphology, holds great significance. In this study, two non‐fused polymerized small molecular (PSMAs), PFBTz‐OD PFBTz‐DT, featuring distinct alkyl side chains are designed synthesized. Compared with PFBTz‐OD, PFBTz‐DT exhibits better solubility due its longer chains, resulting in higher weight temperature‐dependent characteristics solution. The all‐PSC utilizing PBDB‐T:PFBTz‐DT attains a power conversion efficiency (PCE) 9.74%, surpassing PCE PBDB‐T:PFBTz‐OD device, which stands at 6.60%. mainly attributed suitable compatibility between donor acceptor, facilitates optimal phase separation. proper separation, turn, enhances exciton dissociation, increases mobility both electrons holes minimizes charge recombination. This study emphasizes how engineering influences control acceptor solution packing film, essential optimizing improving device performance.

Language: Английский

Citations

0
Volatile Imide Additives with Large Dipole and Special Film Formation Kinetics Enable High‐Performance Organic Solar Cells DOI Open Access

Shuangshuang Xia,

Jie Xu, Zongtao Wang

et al.

Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Abstract Large dipole moment additives have strong interactions with the host materials, which can optimize morphology and improve photovoltaic performance of organic solar cells (OSCs). However, these are difficult to remove due their intermolecular interactions, may impair stability. Developing volatile large moments is challenging. Herein, we first report imide that could effectively OSCs through modification. Three N ‐( o ‐chlorophenyl)phthalimide ( ClPA), m p ClPA) were screened investigate effort positional isomerization on molecular configuration interaction. These (ClPAs) larger (2.0664 Debye for ClPA, 4.2361 4.7896 compared reported solid additives. In contrast traditional simultaneous nucleation crystal growth, ClPAs induce acceptor nucleate then grow, contributes forming high‐quality domains better crystallinity. To our knowledge, this unique film formation kinetics was first. The power conversion efficiency (PCE) based PM6:BTP‐eC9 treated ClPA improved from 16.13 % 18.58 %. Additive also performed well in PM6:L8‐BO, PM6:Y6, D18:L8‐BO systems, a high PCE 19.04 achieved. Our results indicate using unit construct simple effective strategy, halogen atom has effect performance.

Language: Английский

Citations

0
Unveiling the switching mechanism of robust tetrazine-based memristive nociceptors via a spectroelectrochemical approach DOI Creative Commons

Ji-Yu Zhao,

Kun Liu, Wei Zeng

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Two organic small molecules were designed and synthesized to serve as memristive artificial nociceptor in memristors.

Language: Английский

Citations

0
Completely Fused Non‐Fullerene Acceptor Enables Efficient Postprocessing‐Free Organic Photovoltaics Cells DOI
Wenxuan Wang, Shaoqing Zhang, Tao Zhang

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 11, 2024

Abstract The photovoltaic performance of organic (OPV) cells can be significantly improved by regulating the aggregation structure and film formation kinetics constituent materials. However, many regulation strategies, including use additives annealing, require complex fabrication processes additional investments, which poses challenges for industrialization OPV cells. In this work, a completely fused non‐fullerene acceptor, GS‐20 is designed synthesized, with strong properties. incorporation as third component into PBQx‐TF:eC9‐2Cl‐based cell accelerates eC9‐2Cl improves molecular stacking promoting deposition. as‐cast ternary fabricated without any post‐treatments exhibited high V OC 0.890 maximum PCE 19.0%. Moreover, postprocessing‐free module using blade coating method obtains satisfactory 13.5%, indicating excellent feasibility large‐scale preparation. This work realizes an efficient through design strategy, facilitating technology.

Language: Английский

Citations

3