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241205s2024 xx |||||o 00| ||eng c |
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|a 10.1107/S1600576724010082
|2 doi
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|a pubmed24n1622.xml
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|a (NLM)39628884
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|a DE-627
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|e rakwb
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|a eng
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|a Lu, Kuan-Hsun
|e verfasserin
|4 aut
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|a Modulating phase segregation during spin-casting of fullerene-based polymer solar-cell thin films upon minor addition of a high-boiling co-solvent
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|c 2024
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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 05.12.2024
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|a published: Electronic-eCollection
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|a Citation Status PubMed-not-MEDLINE
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|a © Kuan-Hsun Lu et al. 2024.
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|a The impact of additives on the nanoscale structures of spin-cast polymer composite films, particularly in polymer solar cells, is a topic of significant interest. This study focuses on the blend film comprising poly(thieno[3,4-b]thio-phene-alt-benzodi-thio-phene) (PTB7) and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM), exploring how additives like 1,8-di-iodo-octane (DIO) influence the film structures spin-cast from chloro-benzene solution. Combined results of specular X-ray and neutron reflectivity, grazing-incidence small- and wide-angle X-ray scattering (GISAXS and GIWAXS), and X-ray photoelectron spectroscopy indicate that DIO could significantly enhance the dispersion of PC71BM and reduce composition inhomogeneity in the film. Time-resolved GISAXS-GIWAXS with 100 ms resolution further captures a rapid spinodal decomposition of the mixture within 1 s in the constant-evaporation stage of spin-casting. Further combined with parallel analysis of time-resolved UV-Vis reflectance, these findings reveal that DIO mitigates the spinodal decomposition process by accelerating solvent evaporation, which, in turn, decelerates phase segregation, leading to a nucleation-driven process. These observations provide mechanistic insights into the role of additives in controlling the nanostructural evolution of spin-cast films by altering the kinetics of solvent evaporation and phase separation during the spin-coating process
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|a Journal Article
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|a GISAXS
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|a GIWAXS
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|a X-ray reflectivity
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|a additive effects
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|a grazing-incidence small/wide-angle X-ray scattering
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|a neutron reflectivity
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|a polymer solar cells
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|a spinodal decomposition
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|a Wu, Wei-Ru
|e verfasserin
|4 aut
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|a Su, Chun-Jen
|e verfasserin
|4 aut
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|a Yang, Po-Wei
|e verfasserin
|4 aut
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|a Yamada, Norifumi L
|e verfasserin
|4 aut
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|a Zhuo, Hong-Jun
|e verfasserin
|4 aut
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|a Chen, Show-An
|e verfasserin
|4 aut
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|a Chuang, Wei-Tsung
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lan, Yi-Kang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Su, An-Chung
|e verfasserin
|4 aut
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| 700 |
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|a Jeng, U-Ser
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of applied crystallography
|d 1998
|g 57(2024), Pt 6 vom: 01. Dez., Seite 1871-1883
|w (DE-627)NLM098121561
|x 0021-8898
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|g volume:57
|g year:2024
|g number:Pt 6
|g day:01
|g month:12
|g pages:1871-1883
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|u http://dx.doi.org/10.1107/S1600576724010082
|3 Volltext
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