| Titre : |
Slot die-coated blue SMOLED multilayers |
| Type de document : |
texte imprimé |
| Auteurs : |
Sebastian M. Raupp, Auteur ; Lisa Merklein, Auteur ; Sebastian Hietzschold, Auteur ; Martin Zürn, Auteur ; Philip Scharfer, Auteur ; Wilhelm Schabel, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 1029-1037 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Diodes électroluminescentes
Electronique -- Matériaux
Enduction
Microscopie à force atomique
Morphologie (matériaux)
Poly(3,4-éthylènedioxythiophène)
Polystyrène sulfone
Revêtement -- Séchage
Revêtements multicouches
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The key challenge in solution-processing efficient OLEDs is to realize the multilayer device architecture. We demonstrate that slot die coating is applicable to deposit small-molecule (SM) layers on top of each other without dissolving the underlying layer. A stack for a blue SMOLED is chosen comprising slot die-coated PEDOT:PSS, an SM emissive layer (EML) as well as an SM electron transport layer (ETL). The devices are fabricated in a sheet-to-sheet coating process with a slot die table coater under ambient conditions. While keeping the processing parameters constant for PEDOT:PSS and the EML, the composition of the ETL is varied. The choice of solvent for coating the ETL is crucial regarding wetting and dissolution of the underlying layer, solubility, surface roughness, and device efficiencies. Average roughness values down to 0.38 nm and peak to valley values around 10 nm were measured. Comparing device efficiencies of devices with and without ETL, an increase in efficiency with a factor up to 42 was achieved. In total, we show 135 blue SMOLEDs to demonstrate reproducibility. |
| DOI : |
10.1007/s11998-017-9964-z |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9964-z.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29138 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 5 (09/2017) . - p. 1029-1037
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