FK306
CAS Number 1421058-47-0
Dopant Materials, High Purity Sublimed Materials, Semiconducting Molecules
FK306, co-dopant material for devices with high performances
Highly efficient blue phosphorescent emitter
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
| CAS number | 1421058-47-0 |
| Chemical formula | C33H33F4IrN4O2 |
| Molecular weight | 785.85 g/mol |
| Absorption | λmax 244 nm (dichloromethane) |
| Photoluminescence | λem 454 nm (dichloromethane) |
| HOMO/LUMO | HOMO = 6.3 eV, LUMO = 3.6 eV; ET = 2.83 eV[1] |
| Chemical name | Bis[4-tert -butyl-2',6'-difluoro-2,3'-bipyridine](acetylacetonate)iridium(III) |
| Synonyms | Iridium(Ⅲ)bis(4-(tert-butyl)-2,6-diuoro-2,3-bipyridinne)acetylacetonate |
| Classification / Family | Iridium complex, Blue phosphorescent materials, Blue dopant materials, Electron transport materials, Sublimed materials, Semiconducting small molecules |
Product Details
| Purity | Sublimed >99.0% (HPLC) |
| Melting point | > 280 °C (0.5% weight loss) |
| Appearance | Yellow powder/crystals |
*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 |
Pricing
| Grade | Order Code | Quantity | Price |
| Sublimed (>99.0% purity) | M2308A1 | 100 mg | £260 |
| Sublimed (>99.0% purity) | M2308A1 | 250 mg | £520 |
| Sublimed (>99.0% purity) | M2308A1 | 500 mg | £950 |
| Sublimed (>99.0% purity) | M2308A1 | 1 g | £1600 |
MSDS Documentation
FK306 MSDS sheetLiterature and Reviews
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High-performance pure blue phosphorescent OLED using a novel bis-heteroleptic iridium(III) complex with fluorinated bipyridyl ligands, F. Kessler et al., J Mater. Chem., 1 (6), 1070-1075 (2013); DOI:10.1039/C2TC00836J.
- High Performances Thermally Activated Delayed Fluorescence Organic Light-emitting Diodes with Wide Gap Phosphorescent Complex as Sensitizer, Y. Cui et al., J. Mater. Chem. C, 8, 5984-5990 (2020); DOI: 10.1039/D0TC00446D.
- Utilization of double-sensitized structure toward achieving high performance green and red phosphorescent organic light-emitting diodes, S. Li et al., J. Mater. Chem. C, 9, 11729-11737 (2021); DOI: 10.1039/D1TC02756E.