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White organic light-emitting devices consisting of a non-doped ultrathin orange emissive layer (EML) and a doped blue EML were fabricated. The effect of varying electron transporting layers on device performance was studied, while 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline, 4,7-diphenyl-1,10-phenanthroline, tris(8-hydroxy-quinolinato)aluminum and 1,3,5-tris(2-N-phenylbenzimidazolyl)benzene (TPBi)...
Phosphorescent white organic light-emitting devices (PhWOLEDs) were fabricated by doping with the blue and yellow phosphors of iridium (III) bis (4,6-(di-fluorophenyl)-pyridinato-N, C2′) picolinate and [2-(4-tertbutylphenyl) benzothiazolato-N, C2′] iridium (acetylacetonate), respectively. The influence of interlayer on the performance of PhWOLEDs was studied with the assistance of three different...
White organic light-emitting diodes (WOLEDs) with non-doped structure have been fabricated using an bipolar fluorescent material of 2-{4-[bis(9,9-dimethylfluorenyl)amino]phenyl}-5-(dimesityl boryl)thiophene (FlAMB-1T) as both hole-electron transporting and green light-emitting layer. An ultrathin layer of 3-(dicyanomethylene)-5,5-dimethyl-1-(4-dimethylamino-styryl) cyclohexene (DCDDC) was inserted...
Using a blue iridium complex phosphorescent dye of bis[(4,6-diflourophenyl)-pyridinato-N,C 2 ′)](picolinato) iridium(III) (FIrpic) and a yellow iridium complex phosphorescent dye of bis[2-(4-tertbutylphenyl)benzothiazolato-N,C 2, ]iridium (acetylacetonate) [(t-bt) 2 Ir(acac)] as dual ultrathin layers, nondoped white organic light-emitting diodes (WOLEDs) were fabricated. By...
White organic light-emitting diodes (WOLEDs) have been fabricated by using a novel phosphor of bis(1,2-dipheny1-1H-benzoimidazole) iridium (acetylacetonate) [(pbi) 2 Ir(acac)] as a sensitizer doped into a carbazole polymer of poly(N-vinylcarbazole) (PVK), and a fluorescent dye of 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran(DCJTB) as an ultrathin red light-emitting...
Molecular organic light-emitting devices (MOLED) and polymer devices (POLED) were fabricated using a novel iridium complex bis[2-(4′-tert-butylphenyl)-1-phenyl-1H-benzoimidazole-N,C 2′ ] iridium (III) (acetylacetonate) phosphor as an emissive dye doped in two different host materials. Electroluminescent (EL) property, current density–voltage–luminance, and current efficiency characteristics...
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