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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202202089
|2 doi
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|a pubmed24n1141.xml
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|a (DE-627)NLM342456407
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|a (NLM)35724397
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Gao, Wei
|e verfasserin
|4 aut
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|a Achieving 19% Power Conversion Efficiency in Planar-Mixed Heterojunction Organic Solar Cells Using a Pseudosymmetric Electron Acceptor
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|c 2022
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|a Text
|b txt
|2 rdacontent
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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 10.08.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 Wiley-VCH GmbH.
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|a 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 in making a pseudosymmetric electron acceptor, BS3TSe-4F. The combined molecular asymmetry with more polarizable selenium substitution increases the dielectric constant of the D18/BS3TSe-4F blend, helping lower the exciton binding energy. On the other hand, dimer packing in BS3TSe-4F is facilitated to enable free charge generation, helping more efficient exciton dissociation and lowering the radiative recombination loss (ΔE2 ) of OSCs. As a result, PMHJ OSCs based on D18/BS3TSe-4F achieve a PCE of 18.48%. By incorporating another mid-bandgap acceptor Y6-O into D18/BS3TSe-4F to form a ternary PMHJ, a higher open-circuit voltage (VOC ) can be achieved to realize an impressive PCE of 19.03%. The findings of using pseudosymmetric electron acceptors in enhancing device efficiency provides an effective way to develop highly efficient acceptor materials for OSCs
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|a Journal Article
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|a electron acceptors
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|a free charge generation
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|a organic solar cells
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|a planar-mixed heterojunctions
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|a pseudosymmetry
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|a Qi, Feng
|e verfasserin
|4 aut
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|a Peng, Zhengxing
|e verfasserin
|4 aut
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|a Lin, Francis R
|e verfasserin
|4 aut
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|a Jiang, Kui
|e verfasserin
|4 aut
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|a Zhong, Cheng
|e verfasserin
|4 aut
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|a Kaminsky, Werner
|e verfasserin
|4 aut
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|a Guan, Zhiqiang
|e verfasserin
|4 aut
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|a Lee, Chun-Sing
|e verfasserin
|4 aut
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|a Marks, Tobin J
|e verfasserin
|4 aut
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|a Ade, Harald
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|4 aut
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|a Jen, Alex K-Y
|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 34(2022), 32 vom: 20. Aug., Seite e2202089
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:34
|g year:2022
|g number:32
|g day:20
|g month:08
|g pages:e2202089
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|u http://dx.doi.org/10.1002/adma.202202089
|3 Volltext
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