Improvement of the light extraction efficiency of top-emitting organic light-emitting diodes by a two-dimensional diffraction layer fabricated using self-assembled nanoparticles.
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.
Nakanishi
Tsutomu
T
Corporate Research & Development Center, Toshiba Corporation, 1, Komukai-Toshiba-cho, Saiwai-ku,Kawasaki, Kanagawa 212-8582, Japan. tsutomu1.nakanishi@toshiba.co.jp
Hiraoka
Toshiro
T
Fujimoto
Akira
A
Matake
Shigeru
S
Okutani
Satoshi
S
Sano
Hiroshi
H
Asakawa
Koji
K