CAS Number 664374-03-2
FIr6, is commonly used as a phosphorescent blue emitter material for OLED devices.
In terms of colour, purity and quality, FIr6 is more practical for use in full-colour display devices and lighting applications compared to the more widely-used blue phosphorescent emitter, FIrPic. FIr6 shows deeper blue emissions with major vibronic peaks at 458 and 489 nm, while FIrPic has major vibronic emission peaks at 475 and 500 nm.
CAS number | 664374-03-2 |
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Full name | Bis(2,4-difluorophenylpyridinato)-tetrakis(1-pyrazolyl)borate iridium(III) |
Chemical formula | C34H24N10BF4Ir |
Molecular weight | 851.64 g/mol |
Absorption* | λmax 367 nm in THF |
Fluorescence | λem 461 nm in DCM |
HOMO/LUMO | HOMO 6.10 eV, LUMO 3.10 eV [1] |
Synonyms | Iridium (III) bis(4',6'-difluorophenylpyridinato)tetrakis(1-pyrazolyl)borate |
Classification / Family | Iridium Complex, Organic electronics, TADF-OLEDs, Blue dopant materials, Blue phosphorescent OLED materials, Sublimed materials. |
* Measurable with a USB spectrometer
Purity | >99% |
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Melting point | TGA: >280 °C (0.5% weight loss) |
Appearance | Yellow powder/crystals |
* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials.
Device structure | ITO/TAPC (40 nm)/m-DCz-S:10 wt% FIr6 (10 nm)/TmPyPB (40 nm)/LiF (1 nm)/Al (100 nm) [2] |
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Colour |
Blue ![]() |
Max Current Efficiency | 49.8 cd/A |
Max EQE | 25.1% |
Max. Power Efficiency | 50.9 lm W-1 |
Device structure | ITO/NPB (10 nm)/TCTA (20 nm)/BCPO: FIr6 (7–8%, 30 nm)/BCP (10nm)/Alq (50 nm)/LiF (1 nm)/Al (100 nm) [3] |
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Colour |
Blue ![]() |
Max. Luminance | 28,718 cd/m2 |
Max. Current Efficiency | 36.8 cd/A |
Max. EQE | 19.8% |
Max. Power Efficiency | 33.1 lm W-1 |
Device structure | ITO/ PEDOT:PSS (35 nm)/TAPC (40 nm)/Ad-Cz:5wt%FIr6 (7 nm)/Ad-Pd:10wt%FIr6 (15 nm)/TPBI (40 nm)/LiF (1 nm)/Al (100 nm) [4] |
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Colour |
Blue ![]() |
Max. EQE | 19.0% |
Max. Power Efficiency | 33.0 lm W-1 |
Device structure | ITO/PEDOT:PSS (40 nm)/ p-TAZSiTPA:FIr6 (10 wt%, 40 nm)/Tm3PyPB (5 nm)/TPBI (30 nm)/LiF (1 nm)/Al (100 nm [5] |
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Colour |
Blue ![]() |
Max. Current Efficiency | 12.5 cd/A |
Max. EQE | 6.3% |
Max. Power Efficiency | 6.2 lm W-1 |
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