Multi-layered organic light-emitting diode fabrication using low molecular weight materials by electrospray method

Yasushi Koishikawa; Hiroshi Miyazaki; Masayuki Yahiro; Chihaya Adachi

doi:10.1016/j.tsf.2013.07.083

Multi-layered organic light-emitting diode fabrication using low molecular weight materials by electrospray method

Yasushi Koishikawa, Hiroshi Miyazaki, Masayuki Yahiro, Chihaya Adachi

Applied Chemistry

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

Active technology development efforts to improve the productivity of organic light emitting diode (OLED) fabrication using wet processes based on ink-jet technology have been conducted by taking advantage of the low cost and large area processability of organic materials.However, OLEDs formed by conventional wet processes have been unable to reproduce the high performance levels of OLEDs that were mass-produced by dry processes based on vacuum deposition.We have therefore focused on the electrospray (ES) method as a potential fabrication technology.In this paper, we report on a multilayer thin-film fabrication process with low molecular-weight materials using an ES method that allows atomization of the organic materials by Coulomb repulsion and successive adhesion of solid-state multi-layered thin films.We demonstrate OLED fabrication by this ES method and the characteristics of the resulting devices.

Original language	English
Pages (from-to)	527-532
Number of pages	6
Journal	Thin Solid Films
Volume	545
DOIs	https://doi.org/10.1016/j.tsf.2013.07.083
Publication status	Published - Oct 31 2013

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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abstract = "Active technology development efforts to improve the productivity of organic light emitting diode (OLED) fabrication using wet processes based on ink-jet technology have been conducted by taking advantage of the low cost and large area processability of organic materials.However, OLEDs formed by conventional wet processes have been unable to reproduce the high performance levels of OLEDs that were mass-produced by dry processes based on vacuum deposition.We have therefore focused on the electrospray (ES) method as a potential fabrication technology.In this paper, we report on a multilayer thin-film fabrication process with low molecular-weight materials using an ES method that allows atomization of the organic materials by Coulomb repulsion and successive adhesion of solid-state multi-layered thin films.We demonstrate OLED fabrication by this ES method and the characteristics of the resulting devices.",

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AU - Adachi, Chihaya

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