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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202202608
|2 doi
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|a pubmed24n1142.xml
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|a (DE-627)NLM342691945
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|a (NLM)35748129
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|a DE-627
|b ger
|c DE-627
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|a eng
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| 100 |
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|a Fu, Huiting
|e verfasserin
|4 aut
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| 245 |
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|a A Top-Down Strategy to Engineer ActiveLayer Morphology for Highly Efficient and Stable All-Polymer Solar Cells
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 18.08.2022
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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 major challenge hindering the further development of all-polymer solar cells (all-PSCs) employing polymerized small-molecule acceptors is the relatively low fill factor (FF) due to the difficulty in controlling the active-layer morphology. The issues typically arise from oversized phase separation resulting from the thermodynamically unfavorable mixing between two macromolecular species, and disordered molecular orientation/packing of highly anisotropic polymer chains. Herein, a facile top-down controlling strategy to engineer the morphology of all-polymer blends is developed by leveraging the layer-by-layer (LBL) deposition. Optimal intermixing of polymer components can be achieved in the two-step process by tuning the bottom-layer polymer swelling during top-layer deposition. Consequently, both the molecular orientation/packing of the bottom layer and the molecular ordering of the top layer can be optimized with a suitable top-layer processing solvent. A favorable morphology with gradient vertical composition distribution for efficient charge transport and extraction is therefore realized, affording a high all-PSC efficiency of 17.0% with a FF of 76.1%. The derived devices also possess excellent long-term thermal stability and can retain >90% of their initial efficiencies after being annealed at 65 °C for 1300 h. These results validate the distinct advantages of employing an LBL processing protocol to fabricate high-performance all-PSCs
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|a Journal Article
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|a all-polymer solar cells
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|a blend morphology
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|a device stability
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|a layer-by-layer deposition
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|a power conversion efficiency
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|a Peng, Zhengxing
|e verfasserin
|4 aut
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|a Fan, Qunping
|e verfasserin
|4 aut
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|a Lin, Francis R
|e verfasserin
|4 aut
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|a Qi, Feng
|e verfasserin
|4 aut
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|a Ran, Yixin
|e verfasserin
|4 aut
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|a Wu, Ziang
|e verfasserin
|4 aut
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|a Fan, Baobing
|e verfasserin
|4 aut
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| 700 |
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|a Jiang, Kui
|e verfasserin
|4 aut
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|a Woo, Han Young
|e verfasserin
|4 aut
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|a Lu, Guanghao
|e verfasserin
|4 aut
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|a Ade, Harald
|e verfasserin
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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), 33 vom: 15. Aug., Seite e2202608
|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:33
|g day:15
|g month:08
|g pages:e2202608
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|u http://dx.doi.org/10.1002/adma.202202608
|3 Volltext
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