High‐Efficiency Layer‐by‐Layer All‐Polymer Solar Cell Enabled by Bottom‐Layer Optimization

Dou, Yuejia; Hong, Ling; Jing, Jianhua; Jia, Tao; Zhang, Jiabin; Zhang, Kai; Huang, Fei

doi:10.1002/solr.202300599

Cited by 8 publications

(1 citation statement)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The boosted µ e in films may be closely correlative with molecular packing optimization of layered blend films with low BTP-ec9 as a morphology regulator. The enhanced µ e should well support the increment of FF for optimal PPHJ-APSCs [33,34].…”

Section: Resultsmentioning

confidence: 76%

Nonfullerene Small Molecular Acceptor Acting as a Solid Additive Enables Highly Efficient Pseudo-Bilayer All-Polymer Solar Cells

Liu,

Ni,

Zhang

et al. 2024

Energies

View full text Add to dashboard Cite

In this work, pseudo-bilayer planar heterojunction (PPHJ) all-polymer solar cells (APSCs) were constructed on the basis of the commonly used PY-IT and PM6 as the acceptor and donor, respectively. A nonfullerene small molecular acceptor (NF-SMA) BTP-eC9 was incorporated into the PY-IT layer as the solid additive in consideration of its similar building block to PY-IT. BTP-eC9 can serve as a photon capture reinforcer and morphology-regulating agent to realize more adequate photon capture, as well as a more orderly molecular arrangement for effective carrier transport. By incorporating 2 wt% BTP-eC9, the efficiency of PM6/PY-IT-based PPHJ-APSCs was boosted from 15.11% to 16.47%, accompanied by a synergistically enhanced short circuit current density (JSC, 23.36 vs. 24.08 mA cm−2) and fill factor (FF, 68.83% vs. 72.76%). In another all-polymer system, based on PBQx-TCl/PY-DT as the active layers, the efficiency could be boosted from 17.51% to 18.07%, enabled by the addition of 2 wt% L8-BO, which further verified the effectiveness of using an NF-SMA as a solid additive. This work demonstrates that incorporating an NF-SMA as a solid additive holds great potential for driving the development of PPHJ-APSCs.

show abstract

Section: Resultsmentioning

confidence: 76%

Nonfullerene Small Molecular Acceptor Acting as a Solid Additive Enables Highly Efficient Pseudo-Bilayer All-Polymer Solar Cells

Liu,

Ni,

Zhang

et al. 2024

Energies

View full text Add to dashboard Cite

show abstract

Sustainable Solution Processing Toward High‐Efficiency Organic Solar Cells: A Comprehensive Review of Materials, Strategies, and Applications

Ma,

Yan,

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

Organic solar cells (OSCs) have emerged as promising candidates for renewable energy harvesting due to their lightweight, flexible, and low‐cost fabrication potential. The efficiency of OSCs is largely determined by the choice of solvents, which significantly affect the film morphology of the active layers, the intermixed donor‐acceptor domains, and overall device performance. Beginning with an introduction to the importance of solvent selection, the screening and classification of solvents, emphasizing their characteristics and classification based on sustainability, solubility, and other additional considerations are explored. Various non‐halogenated solvents, highlighting commonly used aromatic solvents, biomass‐derived solvents, and water/alcohol‐based solvents are explored. The state‐of‐the‐art donor and acceptor materials, focusing on efficient donor materials such as PM6 and D18, and high‐performing Y‐series acceptors are also presented. Strategies for developing high‐performance OSCs processed using non‐halogenated solvents are examined, including solvent engineering with additive and additive‐free approaches, ternary strategies, and layer‐by‐layer techniques. The fabrication of large‐area devices using non‐halogenated solvents is addressed, focusing on blade‐coating, slot‐coating, and other processing techniques. Finally, this review outlines future research directions in the non‐halogenated solvent processing of OSCs, emphasizing the need for continuous innovation to overcome existing limitations and propel OSC technology toward commercial viability.

show abstract

Effective Regulation of Morphologies and Exciton‐Generation Process Enables Quasi‐Planar All‐Polymer Organic Solar Cells Exceed 18% Efficiency

Wang,

Chen,

Zhao

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

Disordered polymer chain entanglements within all‐polymer blends limit the formation of optimal donor–acceptor phase separation, and thus the performance of all‐polymer organic solar cells (all‐PSCs). Considering the challenge and importance of morphology regulation in all‐PSCs, a diluted layer‐by‐layer (N‐LBL) strategy is thereby adopted to fine‐tuning the properties of all‐polymer blends. When comparing the traditional PM6:PY‐IT based bulk‐heterojunction (BHJ) film and PM6/PY‐IT layer‐by‐layer (LBL) film, the N‐LBL film, which is prepared from diluted PM6 (with 3% PY‐IT) bottom layer and diluted PY‐IT (with 6% PM6) top layer, displayed a clearer bi‐continuous fibrillar network and a higher exciton generation process. Benefiting from these unique characters, the all‐PSC consisting the N‐LBL active layer exhibited a short‐circuit current density over 26 mA cm−2 and a power conversion efficiency (PCE) of 18.33%, which are both higher than those of BHJ (16.88%) and LBL (17.13%) devices. Moreover, the universality of the dilution strategy in other all‐polymer blends (PM6 and PY‐DT, PM6 and PY‐FT‐o) is also demonstrated with unanimously improved device performance. This work underscores the effectiveness of the diluted layer‐by‐layer method in tuning the morphologies and charge dynamics for high‐performance all‐PSCs.

show abstract

High‐Efficiency Layer‐by‐Layer All‐Polymer Solar Cell Enabled by Bottom‐Layer Optimization

Cited by 8 publications

References 62 publications

Nonfullerene Small Molecular Acceptor Acting as a Solid Additive Enables Highly Efficient Pseudo-Bilayer All-Polymer Solar Cells

Nonfullerene Small Molecular Acceptor Acting as a Solid Additive Enables Highly Efficient Pseudo-Bilayer All-Polymer Solar Cells

Sustainable Solution Processing Toward High‐Efficiency Organic Solar Cells: A Comprehensive Review of Materials, Strategies, and Applications

Effective Regulation of Morphologies and Exciton‐Generation Process Enables Quasi‐Planar All‐Polymer Organic Solar Cells Exceed 18% Efficiency

Contact Info

Product

Resources

About