title: Improvement of the light extraction efficiency of top-emitting organic light-emitting diodes by a two-dimensional diffraction layer fabricated using self-assembled nanoparticles.
abstract: The light extraction efficiency of top-emitting organic light-emitting diodes (OLEDs) was improved by insertion of a two-dimensional (2D) diffraction layer. The 2D diffraction layer was fabricated by our original nanofabrication technique, the embedded particle monolayer method, which could form a self-assembled particle monolayer. As a result, the electroluminescence intensity of the device with the 2D diffraction layer was improved by 1.67 times (in total luminous flux) and 2.07 times (in peak wavelength). High luminance top-emitting OLEDs were fabricated using the potentially low-cost self-assembling technique.
authors.affiliation: Corporate Research & Development Center, Toshiba Corporation, 1, Komukai-Toshiba-cho, Saiwai-ku,Kawasaki, Kanagawa 212-8582, Japan. tsutomu1.nakanishi@toshiba.co.jp
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Nakanishi
authors.forename: Toshiro
authors.initials: T
authors.lastname: Hiraoka
authors.forename: Akira
authors.initials: A
authors.lastname: Fujimoto
authors.forename: Shigeru
authors.initials: S
authors.lastname: Matake
authors.forename: Satoshi
authors.initials: S
authors.lastname: Okutani
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Sano
authors.forename: Koji
authors.initials: K
authors.lastname: Asakawa