| Titre : |
Process-dependent conductivity and film homogeneity of slot-die-coated PEDOT:PSS–PVA composite films |
| Type de document : |
texte imprimé |
| Auteurs : |
Anna-Lena Riegel, Auteur ; Nora Reichelt, Auteur ; Philip Scharfer, Auteur ; Wilhelm Schabel, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 1039-1051 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Alcool polyvinylique
Composites
Conducteurs organiques
Conduction électrique
Couches minces
Enduction par filière
Poly(3,4-éthylènedioxythiophène)
Polystyrène sulfone
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In this study, we investigate the impact of process parameters on homogeneity and electrical conductivity of slot-die-coated PEDOT:PSS–PVA composite films that are doped with DMSO. Due to a strong correlation between conductivity and morphology of PEDOT:PSS films and the latter’s dependency on the processing step itself, we apply slot die coating for maximized process control and systematically evaluate the impact of coating gap, speed, and film thickness. Since the entire coating and drying process is run in batch mode, the setup is optimized regarding steady-state conditions and high homogeneity of the films. Overall, for the films manufactured in batch mode, we obtain a reproducibility film thickness of 99% and a low deviation from the set film thickness (below 8%). In order to analyze the impact of the coating parameters, stable operating points derived from the viscocapillary model are chosen and either the dimensionless gap or the capillary number is varied. Coating gap and film thickness emerged as dominating parameters, leading to an increase in conductivity of 40% and 70%, respectively, or, when changing both simultaneously, of 157%. Only a minor impact of shear forces (increase of 10%) was found. |
| Note de contenu : |
- MATERIALS AND EXPERIMENTAL METHODS : Materials - Coating ink : composition and preparation - Coating and drying process - Experimental approach : coating window and operating points - Film analysis : conductivity and film thickness
- HOMOGENEITY OF COATINGS : IMPACT OF BATCH PROCESSING
- ELECTRIC CONDUCTIVITY OF COATINGS : INFLUENCE OF COATING PARAMETERS : Dependency of conductivity on dimensionless gap - Dependency of conductivity on capillary number |
| DOI : |
10.1007/s11998-017-9981-Y |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9981-y.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29139 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 5 (09/2017) . - p. 1039-1051
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Process-dependent conductivity and film homogeneity of slot-die-coated PEDOT:PSS–PVA composite films in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 5 (09/2017)
