Preparation and Characterization of Organic Light-Emitting Diodes Using Polymer-Alumina Hybrid Passivation Film with High Hardness

We have studied hybrid passivation coating materials and methods that can achieve good surface hardness using organic and inorganic materials. The passivation layers formed using synthesized passivation agent based on urethane acrylate resins. High-hardness hybrid passivation films were prepared by...

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Bibliographic Details
Published inMolecular Crystals and Liquid Crystals Vol. 677; no. 1; pp. 54 - 64
Main Authors Park, Byung-Min, Chang, Ho Jung, Han, Kwan-Young
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 12.12.2018
Taylor & Francis Ltd
Subjects
Aluminum oxide
dark spot
Diodes
Fillers
Hardness
Inorganic materials
Nanoparticles
Optical properties
Organic light emitting diodes
passivation
Passivity
Physical properties
Resins
Scratch resistance
Surface hardness
Urethane acrylate resins
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Summary:We have studied hybrid passivation coating materials and methods that can achieve good surface hardness using organic and inorganic materials. The passivation layers formed using synthesized passivation agent based on urethane acrylate resins. High-hardness hybrid passivation films were prepared by adding Al 2 O 3 nanoparticles as inorganic fillers to improve the hardness. This can compensate for the poor scratch resistance, which is a problem of existing passivation films, and the prepared films have excellent properties according to an analysis of its various physical properties, and they also have high surface hardness, thus securing their applicability to other organic electronic device fields. In addition, an optimized hybrid passivation film was applied to OLED devices in order to improve the electrical and optical characteristics as well as stability.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2019.1597511