Bis[2-(4,6-difluorophenyl)pyridinato-C2,N](picolinato)iridium, abbreviated as FIrPic, F2IrPic or Ir(difppy)2(pic), is one of the most investigated bis-cyclometallated iridium complexes in particular in the context of organic light emitting diodes (OLEDs). This is because of its attractive sky-blue emission, high emission efficiency, and suitable energy levels as a phosphorescent dopant material.

General Information

CAS number	376367-93-0
Chemical formula	C28H16F4IrN3O2
Molecular weight	694.66 g/mol
Absorption	λmax 256 nm (DCM)
Fluorescence	λem 468 nm, 535 nm (DCM)
HOMO/LUMO	HOMO = 5.8 eV, LUMO = 3.1 eV [1]
Synonyms	F2Irpic, Ir(diFppy)2(pic) Bis[2-(4,6-difluorophenyl)pyridinato-C2,N](picolinato)iridium(III)
Classification / Family	Iridium complex, Phosphorescent blue emitter, Organic light-emitting diodes, Organic electronics

Product Details

Purity	>99.5% (Sublimed) >98.0% (Unsublimed)
Melting point	330-335 °C (lit.)
Appearance	Yellow powder

*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials for OLED devices page.

Chemical Structure

Device Structure(s)

Device structure	ITO/MoO3 /FIrpic:CBP/FIrpic:TPBi/LiF/Al [1]
Colour	Blue
Max. Current Efficiency	49 cd/A
Max. Power Efficiency	48 lm W−1

Device structure	ITO/NPB(40 nm)/CDBP:10% FIrpic (10 nm)/TPBI (4 nm)/CBP:5% Ir(ppy)3:3% Ir(piq)2(acac) (20 nm)/TPBI (50 nm)/LiF(0.8 nm)/Al [2]
Colour	White
Max. Luminance	42,700 cd/m2
Max. Power Efficiency	8.48 lm W−1

Device structure	ITO/NPB (50nm)/mCP (10 nm)/CbzTAZ:15 wt% FIripic (35 nm)/TAZ (30 nm)/LiF (1 nm)/Al (120 nm) [3]
Colour	Blue
Max. Luminance	40,000 cd/m2
Max. Current Efficiency	25.8 cd/A
Max. Power Efficiency	22.5 lm W−1

Device structure	ITO/TAPC (50 nm)/TcTa:FIrpic (7%,10 nm)/26DCzPPy:FIrpic (20%, 10 nm)/Tm3PyPB (20 nm)/Tm3PyPB:Cs (30 nm)/LiF (1 nm)/Al (120 nm) [4]
Colour	Blue
Max. EQE	20.3%
Max. Power Efficiency	36.7 lm W−1

Device structure	ITO /NPB (40 nm)/TCTA (5 nm)/TCTA:1 wt% fbi2Ir(acac):4 wt% FIrpic (17.5 nm)/TAZ (40 nm)/LiF/Al [5]
Colour	White
Max. EQE	13.3%
Max. Current Efficiency	37.5 cd/A

Device structure	ITO/MoO3 (3 nm)/TCTA (50 nm)/TCTA:TmPyPb:FIrpic (20 nm)/TmPyPb (30 nm)/LiF (1 nm)/Al (120 nm) [6]
Colour	Blue
Max. EQE	20.4%
Max. Power Efficiency	55.4 lm W−1

Device structure	ITO (150 nm)/NPB (70 nm)/mCP:FIrpic-8.0%:Ir(ppy)3-0.5%:Ir(piq)3-0.5% (30 nm)/TPBi (30 nm)/Liq (2 nm)/Al (120 nm) [7]
Colour	White
Max. Luminance	37,810 cd/m2
Max. Current Efficiency	48.1 cd/A

Device structure	ITO/DNTPD* (60 nm)/NPB (20 nm)/mCP (10 nm)/mCP:FIrpic (25 nm)/CBP:Ir(piq)2acac (5 nm)/BCP (5 nm)/Alq3 (20 nm)/LiF (1 nm)/Al (200 nm) [8]
Colour	White
EQE@500 cd/m2	8.2 %
Current Efficiency @500  cd/m2	12.7 lm W−1

Device structure	ITO/MoOx (5 nm)/NPB (40 nm)/4% Y-Pt*:TCTA (20 nm)/8% FIrpic:mCP(10 nm)/8% FIrpic:UGH2 (10 nm)/BAlq (40 nm)/LiF (0.5 nm)/Al (100 nm) [9]
Colour	White
Max. EQE	16.0%
Max. Current Efficiency	45.6 cd/A
Max. Power Efficiency	35.8 lm W−1

Device structure	ITO/MoO3 (8 nm)/(NPB)(80 nm)/TAPC(5 nm)/TCTA:4 wt% Ir(MDQ)2(acac) (4 nm)/TCTA:2 wt% Ir(ppy)3 (4 nm)/43 wt% TCTA: 43 wt% 26DCzPPy: 14 wt% FIrpic (5 nm)/TmPyPb (40 nm)/LiF/Al [10]
Colour	White
Max. EQE	19.4%
Max. Current Efficiency	43.6 cd/A
Max. Power Efficiency	45.8 lm W−1

Device structure	ITO/PEDOT:PSS/TCTA:TPOB:10 wt % FIrpic/TmPyPB/Cs2CO3/Al [11]
Colour	Blue
Max. EQE	13.8%
Max. Current Efficiency	28.2 cd/A
Max. Power Efficiency	22 lm W−1

Device structure	ITO/PEDOT:PSS(40 nm)/TCTA:TAPC:FIrpic:Ir(ppy)3:Ir(MDQ)2(acac) (40nm)/TmPyPB (50 nm)/LiF (1 nm)/Al [12]
Colour	White
Max. Current Efficiency	37.1 cd/A
Max. Power Efficiency	32.1 lm W−1

Device structure	ITO/MoO3 (7nm)/NPB (85 nm)/ (PPQ)2Ir(acac):Ir(ppy)3:FIrpic:mCP/TAZ/LiF/Al [13]
Colour	White
Max. EQE	20.1%
Max. Power Efficiency	41.3 lm W−1

Characterisation

Pricing

Grade	Order Code	Quantity	Price
Sublimed (>99.5% purity)	M711	250 mg	£329.00
Sublimed (>99.5% purity)	M711	500 mg	£582.00
Unsublimed (>98.0% purity)*	M712	250 mg	£205.00

*low stock

MSDS Documentation

FIrpic MSDS sheet

Literature and Reviews

1. Band Alignment at Anode/Organic Interfaces for Highly Efficient Simplified Blue-Emitting Organic Light-Emitting Diodes, Z. Liu et al.,., J. Phys. Chem. C, 114, 16746–16749 (2010). 
2. White organic light-emitting devices employing phosphorescent iridium complex as RGB dopants, R. Song et al., Semicond. Sci. Technol. 22, 728–731 (2007); doi:10.1088/0268-1242/22/7/009.
3. High Power Efficiency Solution-Processed Blue Phosphorescent Organic Light-Emitting Diodes Using Exciplex-Type Host with a Turn on Voltage Approaching the Theoretical Limit, X. Ban et al., ACS Appl. Mater. Interfaces, 7, 25129−25138 (2015); DOI: 10.1021/acsami.5b06424.
4. Dependence of Light-Emitting Characteristics of Blue Phosphorescent Organic Light-Emitting Diodes on Electron Injection and Transport Materials, Jeong-Ik Lee et al. ETRI J., 34 (5), 690-695 (2012).
5. Highly efficient single-emitting-layer white organic light-emitting diodes with reduced efficiency roll-off, Q Wang, et al., Appl. Phys. Lett.,94, 103503 (2009); doi: 10.1063/1.3097028.
6. High efficiency blue phosphorescent organic light-emitting diode based on blend of hole- and electron-transporting materials as a co-host, Y. Chen et al., Appl. Phys. Lett. 100, 213301 (2012); doi: 10.1063/1.4720512.
7. Study of Sequential Dexter Energy Transfer in High Efficient Phosphorescent White Organic Light-Emitting Diodes with Single Emissive Layer, J-K. Kim et al., Sci. Reports, 4, 7009 (2014); DOI: 10.1038/srep07009.
8. Improved color stability in white phosphorescent organic light-emitting diodes using charge confining structure without interlayer, S-H. Kim et al., Appl. Phys. Lett. 91, 123509 (2007); http://dx.doi.org/10.1063/1.2786853.
9. High efficiency fluorescent white organic light-emitting diodes with red, green and blue separately monochromatic emission layers, Z. Zhang et al., Org. Electronics, 10, 491-495 (2009); doi:10.1016/j.orgel.2009.02.006.
10. High-Efficiency Phosphorescent White Organic Light-Emitting Diodes with Stable Emission Spectrum Based on RGB Separately Monochromatic Emission Layers, Q. Zhang et al., Chin. Phys. Lett., 31 (4) 046801 (2014).
11. Enhanced Electron Affinity and Exciton Confinement in ExciplexType Host: Power Efficient Solution-Processed Blue Phosphorescent OLEDs with Low Turn-on Voltage, X. Ban et al., ACS Appl. Mater. Interfaces, 8, 2010-2016 (2016); DOI: 10.1021/acsami.5b10335.
12. Solution-Processed Small Molecules As Mixed Host for Highly Efficient Blue and White Phosphorescent Organic Light-Emitting Diodes, Q Fu. et al., ACS Appl. Mater. Interfaces, 4, 6579−6586 (2012); dx.doi.org/10.1021/am301703a.
13. Manipulating Charges and Excitons within aSingle-Host System to Accomplish Efficiency/CRI/Color-Stability Trade-off for High-PerformanceOWLEDs, Q. Wang et al., Adv. Mater., 21, 2397–2401 (2009).

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To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.

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