Charge transport polymers for organic electroluminescent devices | Zendy

Kido Junji | Zendy; Hongawa Kenichi | Zendy; Nagai Katsutoshi | Zendy; Okuyama Katsuro | Zendy

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Charge transport polymers for organic electroluminescent devices

Author(s) -

Kido Junji,

Hongawa Kenichi,

Nagai Katsutoshi,

Okuyama Katsuro

Publication year - 1994

Publication title -

macromolecular symposia

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.257

H-Index - 76

eISSN - 1521-3900

pISSN - 1022-1360

DOI - 10.1002/masy.19940840112

Subject(s) - electroluminescence , materials science , optoelectronics , layer (electronics) , fluorescence , substrate (aquarium) , luminance , doping , charge carrier , polymer , optics , nanotechnology , oceanography , geology , composite material , physics

Triple‐layer‐type organic electroluminescent devices were fabricated using charge‐transporting poly( N ‐vinylcarbazole) (PVK) as a hole‐transporting emitter layer. Electron‐transporting layers consisting of a triazole derivative (TAZ) and an aluminum complex (Alq) layer were used to maximize the carrier recombination efficiency. The EL device with a structure of glass substrate/indium‐tinoxide/PVK/TAZ/AIq/Mg:Ag showed bright blue emission from the PVK layer with a luminance of over 700 cd/m 2 . The emission color was tuned to a desirable color in the visible region through doping the PVK layer with fluorescent dyes. Bright white emission, in particular, was obtained for the first time at a high luminance level of over 3000 cd/m 2 by using three kinds of fluorescent dyes each emitting red, green or blue.

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