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27.3: Efficient Red Organic Electroluminescent Devices Based on a Novel co‐Host Emitter System
Author(s) -
Iou ChungYeh,
Liu TswenHsin,
Chen HsianHung,
Shen WenJian,
Chen Chin H.
Publication year - 2003
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1832446
Subject(s) - oled , common emitter , luminance , electroluminescence , anthracene , fluorescence , optoelectronics , materials science , quenching (fluorescence) , doping , host (biology) , chemistry , nanotechnology , photochemistry , optics , physics , layer (electronics) , biology , ecology
We have developed an efficient red OLED device based on the fluorescent dye DCJTB doped in a novel co‐host matrix system of 9,10‐di(2‐naphthyl) anthracene (ADN) and Alq 3 , which achieved a luminance efficiency of 4.2– 5.5 cd/A at 20 mA/cm 2 with a CIE x, y color coordinate of [0.64, 0.35] – [0.62, 0.37]. At high ADN concentration (>60%), this co‐hosted emitter system has the advantage of alleviating the current‐induced fluorescence quenching problem often encountered in red organic EL devices and greatly improves the EL efficiency over a wide range of drive current conditions.