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17.2: Highly Efficient Red Co‐Host Emitter with a New Fluorescent Dopant in Organic Electroluminescent Devices
Author(s) -
Wen ShihWen,
Liu Tswen Hsin
Publication year - 2004
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 - 10.1889/1.1825795
Subject(s) - dopant , electroluminescence , oled , fluorescence , rubrene , common emitter , materials science , optoelectronics , doping , nanotechnology , optics , physics , layer (electronics)
We have developed a very efficient fluorescent red dopant material for use in OLED devices. Applied in a co‐host emitting system of rubrene/Alq 3 (60/40), the device showed an EL efficiency of 5.49 cd/A and 2.59 lm/W at 20 mA/cm 2 and 6.7 V, with a red CIE x, y color coordinates of [0.64, 0.35], which are among the highest ever reported for a red fluorescent dopant. Its device stability is tested to be as good as that of DCJTB.