Premium
P‐219: Color Stability of White Light‐Emitting Organic Electroluminescent Device Base on Three Phosphorescent Emission Peaks
Author(s) -
Shieh TienShou,
Lin JinSheng,
Liu PeyChing,
Chu MiaoTsai,
Tseng MeiRurng
Publication year - 2008
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 - 10.1889/1.3069600
Subject(s) - phosphorescence , iridium , oled , phosphorescent organic light emitting diode , electroluminescence , photochemistry , chemistry , materials science , pyridine , optoelectronics , fluorescence , layer (electronics) , optics , physics , nanotechnology , medicinal chemistry , organic chemistry , catalysis
Color stability of white organic light emitting diodes (WOLEDs) was developed by three emission peaks. The blue phosphorescent sensitizer was Bis(3,5‐difluoro‐2‐(2‐pyridyl)phenyl‐(2‐carboxypyridyl) iridium (Firpic), the orange phosphorescent sensitizer was the thieno‐pyridine framework organo‐iridium complexes (PO‐01), and the red phosphorescent sensitizer was the phenyl‐qoinazoline framework organo‐iridium complexes (PR‐01). An orange/red phosphorescent emitting layer was sandwiched between blue phosphorescent emitting layers. The devices exhibited no change of EL spectra according to the driving voltage. The efficiency of WOLED of 11.6lm/W (17.4Cd/A) at 1000 Cd/m 2 , a CIE coordinates of (0.43, 0.44), and a CRI of 81. It is good suitability to use in OLED lighting.