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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 34, Number 5
BKCSDE 34(5)
May 20, 2013

Title	Phosphorescent Iridium Complexes for OLEDs Based on 1-Phenylpyrazole Ligands with Fluorine and Methyl Moieties
Author	Seung Soo Yoon, Ji Young Song, Eun Jae Na, Kum Hee Lee, Seong Kyu Kim, Dong Whan Lim, Seok Jae Lee, Young Kwan Kim
Keywords	Phosphorescence, Iridium complex, Phenylpyrazole ligand, White OLED
Abstract	A series of phosphorescent iridium(III) complexes 1-4 based on phenylpyrazole were synthesized and their photophysical properties were investigated. To evaluate their electroluminescent properties, OLED devices with the structure of ITO/NPB/mCP: 8% Iridium complexes (1-4)/TPBi/Liq/Al were fabricated. Among those, the device with 3 showed the most efficient white emission with maximum luminance of 100.6 cd/m2 at 15 V, maximum luminous efficiency of 1.52 cd/A, power efficiency of 0.71 lm/W, external quantum efficiency of 0.59%, and CIE coordinates of (0.35, 0.40) at 15.0 V, respectively.
Page	1366 - 1370
Full Text	PDF

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