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Development and characterization of adjustable refractive index scattering epoxy acrylate polymer layers

Eiselt, Thomas 1; Preinfalk, Jan 2; Gleißner, Uwe; Lemmer, Uli 2,3; Hanemann, Thomas 1
1 Karlsruher Institut für Technologie (KIT)
2 Lichttechnisches Institut (LTI), Karlsruher Institut für Technologie (KIT)
3 Institut für Mikrostrukturtechnik (IMT), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

Several polymer films for improved optical properties in optoelectronic devices are presented. In such optical applications, it is sometimes important to have a film with an adjusted refractive index, scattering properties, and a low surface roughness. These diffusing films can be used to increase the efficiency of optoelectronic components, such as organic light-emitting diodes. Three different epoxy acrylate mixtures containing Syntholux 291 EA, bisphenol A glycerolate dimethacrylate, and Sartomer SR 348 L are characterized and optimized with different additives. The adjustable refractive index of the material is achieved by chemical doping using 9-vinylcarbazole.Titanium nanoparticles in the mixtures generate light scattering and increase the refractive index additionally. A high-power stirrer is used to mix and disperse all chemical ubstances together to a homogenousmixture. The viscosity behavior of the mixtures is an important property for the selection of the production method and, therefore, the viscosity measurement results are presented. After the mixing, the monomer mixture is applied on glass substrates by screen printing. ... mehr

Volltext §
DOI: 10.5445/IR/1000067923
DOI: 10.1117/1.OE.56.3.037105
Zitationen: 1
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Lichttechnisches Institut (LTI)
Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 0036-1860, 0091-3286, 1560-2303
KITopen-ID: 1000067923
HGF-Programm 43.22.03 (POF III, LK 01) Printed Materials and Systems
Erschienen in Optical engineering
Verlag Society of Photo-optical Instrumentation Engineers (SPIE)
Band 56
Heft 3
Seiten 037105-1 - 37105-5
Schlagwörter epoxy acrylate polymer; refractive index; viscosity; roughness; organic light-emitting diodes
Nachgewiesen in Web of Science
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