FK306, namely Bis[4-tert -butyl-2',6'-difluoro-2,3'-bipyridine](acetylacetonate)iridium(III) is a bis-heteroleptic iridium complex with bulky fluorinated bipyridyl ligands.

FK306 is a highly efficient blue phosphorescent emitter with a wide bandgap (2.7 eV) and a deep HOMO energy level (6.3 eV). The deep HOMO energy level of FK306 is beneficial for electron trapping and hole blocking to balance the distribution of holes and electrons in the active layer. FK306 also has a low LUMO energy level (3.6 eV) which makes it a popular candidate as a co-dopant material to achieve higher device performances.

General Information

Product Details

*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the sublimed materials.

Chemical Structure

Device Structure(s)

Device structure	ITO (130 nm)/TAPC (40 nm)/FK306:mCP 15 wt% doped mCP (10 nm)/B3PyPB (50 nm)/LiF (0.5 nm)/Al (100 nm)[1]
Colour	Blue
EQE @100 cd/m2	15.3%
Current Efficiency @100 cd/m2	26.1 cd/A
Power Efficiency @100 cd/m2	24.2 Im/W

Device structure	ITO/HAT-CN (6 nm)/HAT-CN (0.2 wt%):TAPC (50 nm)/FK306 (0.2 wt%):TXO-TPA (1.0 wt%):26DCzPPy (10 nm)/Tm3PyP26PyB (60 nm)/LiF (1 nm)/Al (100 nm) [2]
Colour	Orange-Yellow
Max. EQE	11.8%
Max. Current Efficiency	41.51 cd/A
Max. Power Efficiency	44.95 Im/W

Device structure	ITO/HAT-CN (6 nm)/HAT-CN (0.2 wt%):TAPC (50 nm)/TXO-TPA (1.0 wt%):TcTa (5 nm)/FK306 (0.4 wt%):TXO-TPA (1.0 wt%):26DCzPPy (10 nm)/Tm3PyP26PyB (60 nm)/LiF (1 nm)/Al (100 nm) [2]
Colour	Orange-Yellow
Max. EQE	16.5%
Max. Current Efficiency	58.94 cd/A
Max. Power Efficiency	61.69 Im/W