FK306

CAS Number 1421058-47-0

Blue Dopant Materials, Dopant Materials, High Purity Sublimed Materials, Materials, OLED Materials, Semiconducting Molecules

MSDS

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	λ_max 244 nm (dichloromethane)
Photoluminescence	λ_em 454 nm (dichloromethane)
HOMO/LUMO	HOMO = 6.3 eV, LUMO = 3.6 eV; E_T = 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 sheet

Literature and Reviews

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.

Novel scattering and color converting substrates for simple-structured white organic light-emitting diodes, L. Chen et al., 89 106045 (2021); DOI: 10.1016/j.orgel.2020.106045.
Phosphorescent dye doped electron transport layer for yellow thermally activated delayed fluorescent electroluminescence device, Q. Zhu et al., Optik 241, 166857 (2021); DOI: 10.1016/j.ijleo.2021.166857.
Efficient green electroluminescent devices based on iridium complex with wide energy gap complexes as sensitizers, X. Zhao et al., Org. Electron., 37, 85-92 (2016); DOI: 10.1016/j.orgel.2016.06.025.