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Efficient and bright blue‐emitting phosphorescent materials
Author(s) -
Yeh ShiJay,
Chen ChinTi,
Song YiHwa,
Chi Yun,
Ho MengHuan
Publication year - 2005
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.2121070
Subject(s) - iridium , phosphorescence , oled , dopant , biphenyl , ligand (biochemistry) , photochemistry , pyridine , benzene , materials science , trifluoromethyl , chemistry , optoelectronics , doping , medicinal chemistry , nanotechnology , physics , optics , organic chemistry , catalysis , fluorescence , layer (electronics) , biochemistry , receptor , alkyl
— A new type of ancillary ligand for blue‐emitting heteroleptic iridium complexes has been successfully developed. New ligands, 3‐(trifluoromethyl)‐5‐(pyridin‐2‐yl)‐1,2,4‐triazolate and 5‐(pyridin‐2‐yl)‐tetrazolate, show stronger blue‐shifting power than that of the picolate of FIrpic [iridium (III) bis (4,6‐difluorophenylpyridinato)picolate]. Organic light‐emitting diodes (OLEDs) fabricated with a new complex, FIrtaz [iridium (III) bis (4,6‐difluorophenylpyridinato)(5‐(pyridine‐2‐yl)‐1,2,4‐triazolate) or FIrN4 [(iridium (III) bis (4,6‐difluorophenylpyridinato)(5‐(pyridin‐2‐yl)‐tetrazolate], as the blue dopant in the host of mCP [1,3‐ bis (9‐carbazolyl)benzene], exhibit near‐saturated blue electrophosphorescence with Commision Internale de l'Eclairage (CIE x,y ) coordinates of (0.14, 0.18) and (0.15, 0.24), respectively.