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241031s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202409502
|2 doi
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|a pubmed25n1264.xml
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|a (DE-627)NLM379652684
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|a (NLM)39478654
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Cheng, Christina
|e verfasserin
|4 aut
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| 245 |
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|a Impact of Dilute DIO Additive on Local Microstructure of Fluorinated, pNDI-Based Polymer Solar Cells
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|c 2024
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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
|b cr
|2 rdacarrier
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|a Date Revised 12.12.2024
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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 The performance of all-polymer solar cells is often enhanced by incorporating solvent additives during solution processing. In particular, blends based on the model all-polymer system PBDBT:N2200 have been shown to have increased short-circuit current and fill factor when processed with dilute diiodooctane (DIO). However, the morphological mechanism that drives the increase in performance is often not well understood due to limitations in common characterization techniques. In this study, it is shown that a combination of X-ray techniques with cryogenic high-resolution transmission electron microscopy (HRTEM) analysis can provide a quantitative and spatially resolved picture of polymer chain orientation and alignment in all-polymer blends. It is found that DIO induces vertical phase separation in PBDBT-2F:F-N2200 and increases donor crystallite thickness in the pi-stacking direction leading to an acceptor-rich film surface. However, it is also shown that DIO does not disrupt the formation of face-on donor-acceptor interfaces. These findings suggest that dilute DIO primarily affects crystalline domain formation in single component regions as opposed to mixed regions; thus, dilute DIO can impact vertical charge transport pathways without sacrificing donor-acceptor interfacial connectivity
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|a Journal Article
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|a HRTEM
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4 |
|a all‐polymer
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| 650 |
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4 |
|a morphology
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|a organic photovoltaics
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| 650 |
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4 |
|a solvent additive
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1 |
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|a Wu, Yilei
|e verfasserin
|4 aut
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1 |
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|a Cendra, Camila
|e verfasserin
|4 aut
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1 |
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|a Schneider, Sebastian
|e verfasserin
|4 aut
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1 |
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|a Treiber, Jeremy
|e verfasserin
|4 aut
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1 |
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|a Agarwala, Puja
|e verfasserin
|4 aut
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1 |
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|a Gomez, Enrique D
|e verfasserin
|4 aut
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1 |
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|a Bao, Zhenan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Takacs, Christopher
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Toney, Michael F
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Salleo, Alberto
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 50 vom: 25. Dez., Seite e2409502
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
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|g volume:36
|g year:2024
|g number:50
|g day:25
|g month:12
|g pages:e2409502
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|u http://dx.doi.org/10.1002/adma.202409502
|3 Volltext
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