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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 27, Number 10
BKCSDE 27(10)
October 20, 2006 

Fluorescent Blue Materials for Efficient Organic Light-Emitting Diode with High Color Purity
Kyungsun Choi, Chanhyo Lee, Kwan Hee Lee, Su Jin Park, Seung Uk Son, Young Keun Chung, Jong-In Hong*
Organic light-emitting diode, Electroluminescence, Fluorescent blue materials, Dopants
We report a new series of blue dopants composed of both electron donating and electron accepting moieties in one molecule, based on nalidixic acid. The EL device derived from the dopant exhibits pure blue light emission (0.15, 0.14) The current efficiency is estimated to be 3.88 cd/A at 100 cd/m2, which shows remarkable enhancement, compared to that of the host itself (2.5 cd/A at 100 cd/m2) under the same conditions. These results demonstrate that the incorporation of a proper guest into the host in a guest-host doped system improves not only the purity of the fluorescent blue emission but also elevates its quantum efficiency, thus improving the OLED performance.
1549 - 1552
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