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240222s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202313532
|2 doi
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|a pubmed24n1417.xml
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|a (DE-627)NLM368764133
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|a (NLM)38386402
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|a DE-627
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|e rakwb
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|a eng
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|a Fu, Zhen
|e verfasserin
|4 aut
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|a π-π Stacking Modulation via Polymer Adsorption for Elongated Exciton Diffusion in High-Efficiency Thick-Film Organic Solar Cells
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|c 2024
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|a Text
|b txt
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 24.05.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a Developing efficient organic solar cells (OSCs) with thick active layers is crucial for roll-to-roll printing. However, thicker layers often result in lower efficiency. This study tackles this challenge using a polymer adsorption strategy combined with a layer-by-layer approach. Incorporating insulator polystyrene (PS) into the PM6:L8-BO system creates PM6+PS:L8-BO blends, effectively suppressing trap states and extending exciton diffusion length in the mixed donor domain. Adding insulating polymers with benzene rings to the donor enhances π-π stacking of donors, boosting intermolecular interactions and electron wave function overlap. This results in more orderly molecular stacking, longer exciton lifetimes, and higher diffusion lengths. The promoted long-range exciton diffusion leads to high power conversion efficiencies of 19.05% and 18.15% for PM6+PS:L8-BO blend films with 100 and 300 nm thickness, respectively, as well as a respectable 16.00% for 500 nm. These insights guide material selection for better exciton diffusion, and offer a method for thick-film OSC fabrication, promoting a prosperous future for practical OSC mass production
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|a Journal Article
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|a exciton diffusion length
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|a organic photovoltaics
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|a organic solar cells
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|a thick‐film organic solar cells
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|a Qiao, Jia-Wei
|e verfasserin
|4 aut
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|a Cui, Feng-Zhe
|e verfasserin
|4 aut
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|a Zhang, Wen-Qing
|e verfasserin
|4 aut
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|a Wang, Ling-Hua
|e verfasserin
|4 aut
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|a Lu, Peng
|e verfasserin
|4 aut
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|a Yin, Hang
|e verfasserin
|4 aut
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|a Du, Xiao-Yan
|e verfasserin
|4 aut
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|a Qin, Wei
|e verfasserin
|4 aut
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|a Hao, Xiao-Tao
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 21 vom: 15. Mai, Seite e2313532
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:36
|g year:2024
|g number:21
|g day:15
|g month:05
|g pages:e2313532
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|u http://dx.doi.org/10.1002/adma.202313532
|3 Volltext
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