Tris(1-phenylisoquinoline)iridium(III), Ir(piq)₃ is a deep red phosphorescent dopant material.

Due to their high electron affinities, quinoline/isoquinoline-based compounds have received considerable attention in optoelectronic materials. With greater π-electronic conjugation in the isoquinoline ring, the energy of the lowest unoccupied molecular orbital (LUMO) is significantly lowered, and the energy gap is reduced.

Ir(piq)₃, together with Ir(piq)₂acac, are the ones that have been most studied in theisoquinoline iridium complex family. The "piq" unit of the ligand part can partially suppress the triplet-triplet annihilation and show short phosphorescent lifetimes.

General Information

CAS number	435293-93-9
Chemical formula	C45H30IrN3
Molecular weight	804.96 g/mol
Absorption	λmax 324 nm in THF
Fluorescence	λem 615 nm in THF
HOMO/LUMO	HOMO 5.1 eV, LUMO 3.1 eV [1]
Synonyms	Tris(1-phenylisoquinoline)iridium(III) Tris[1-phenylisoquinoline-C2,N]iridium(III) Tris[1-phenylisoquinolinato-C2,N]iridium(III)
Classification / Family	Organometallic iridium complex, Red emitter, Phosphorescence dopant OLEDs, Sublimed materials

Product Details

Purity	>99.0% (sublimed) >98.0% (unsublimed)
Melting point	454 °C
Appearance	Dark-red 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/NPD* (40 nm)/9%-Ir(piq)3:CBP (20 nm)/BPhen (50 nm)/KF (1 nm)/Al [2]
Colour	Red
Max. Luminance	11,000 cd/m2
Max EQE	10.3%
Max. Power Efficiency	8.0 lm W−1

Device structure	ITO/PEDOT:PSS/BlueJ*:PVK:Ir(pbpp)3*:Ir(piq)3/BCP/Li:Al [3]
Colour	White
Max. Luminance	905 cd/m2
Max EQE	3.2%
Max. Current Efficiency	12.52 cd/A

Device structure	ITO/NPB (40 nm)/Bebq2:1 wt% Ir(piq)3 (30 nm)/Bebq2 (20 nm)/LiF (0.5 nm)/Al (100 nm)[6]
Colour	Red
Max. Current Efficiency	12.71 cd/A
Max. Power Efficiency	16.02 lm W−1

Device structure	ITO/TAPC (40 nm)/TCTA:Ir(piq)3 2 wt % (1 nm)/TCTA 46 wt %:BP4mPy 46 wt %: FIrpic 8 wt % (28 nm)/BP4mPy:Ir(piq)3 3 wt % (1 nm)/BP4mPy (40 nm)/LiF (0.8 nm)/Al (150 nm) [7]
Colour	White
Max. Luminance	19,007 cd/m2
Max EQE	11.3%
Max. Current Efficiency	15.6 cd/A
Max. Power Efficiency	16.3 lm W−1

Device structure	ITO/TAPC (40 nm)/ TCTA 46 wt %:BP4mPy 46 wt %:Ir(piq)3 8 wt % (30 nm)/ BP4mPy (40 nm)/LiF (0.8 nm)/Al (150 nm) [7]
Colour	Red
Max. Luminance	14,879 cd/m2
Max EQE	8.8%
Max. Current Efficiency	5.6 cd/A
Max. Power Efficiency	5.4 lm W−1

Device structure	ITO/MeO-TPD: F4-TCNQ (100 nm, 4 %)/NPB (15 nm)/TCTA (5 nm)/TCTA: Ir (ppy)3 : Ir(piq)3 (25 nm, 1:9:0.8 %)/MADN: DSA-ph (20 nm, 1 %)/Bepp2 (250 nm)/LiF (1 nm)/Al (200 nm) [8]
Colour	White
Max. Current Efficiency	8.4 cd/A
Max. Power Efficiency	13.1 lm W−1
Max. CRI	90

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) [9]
Colour	White
Max. Luminance	37,810 cd/m2
Current Efficiency@1000 cd/m2	48.10 cd/A

Device structure	ITO/PEDOT:PSS (40 nm)/NPB (15 nm)/ TCTA: 4 wt.% Ir(piq)3 (3.5 nm)/TCTA: 4 wt.% Ir(bt)2(acac) (4 nm)/TCTA: 25 wt.% TmPyPb*: 2 wt. % 4P-NPD* (7 nm)/TmPyPb (4 nm)/TmPyPb: 5 wt.% Ir(ppy)2(acac) (3 nm)/TmPyPb (15 nm)/TmPyPb: 4 wt.% Cs2CO3 (35 nm)/ Cs2CO3/Al [10]
Colour	White
EQE@1000 cd/m2	14.2%
Current Efficiency@1000 cd/m2	26 cd/A
Power Efficiency@1000 cd/m2	21.9 lm W−1

*For chemical structure information, please refer to the cited references.

Characterisation

Pricing

Grade	Order Code	Quantity	Price
Sublimed (>99% purity)	M641	100 mg	£196.00
Unsublimed (>98% purity)	M642	250 mg	£195.00
Sublimed (>99% purity)	M641	250 mg	£359.00
Unsublimed (>98% purity)	M642	500 mg	£333.00

MSDS Documentation

Ir(piq)3 MSDS sheet

Literature and Reviews

1. Efficient simple structure red phosphorescent organic light emitting devices with narrow band-gap fluorescent host, T. J. Park et al., Appl. Phys. Lett., 92, 113308 (2008); doi: 10.1063/1.2896641.
2. Homoleptic Cyclometalated Iridium Complexes with Highly Efficient Red Phosphorescence and Application to Organic Light-Emitting Diode, A. Tsuboyama et al., J. Am. Chem. Soc., 125, 12971-12979 (2003). DOI: 10.1021/ja034732d.
3. White-Light-Emitting Diodes Based on Iridium Complexes via Efficient Energy Transfer from a Conjugated Polymer, T-H. Kim et al., Adv. Funct. Mater., 16, 611–617 (2006). DOI: 10.1002/adfm.200500621.
4. Efficient multiple triplet quantum well structures in organic light-emitting devices, T. J. Park et al., Appl. Phys. Lett., 95, 103303 (2009); doi: 10.1063/1.3224190.
5. Color stable white phosphorescent organic light emitting diodes with red emissive electron transport layer, J. W. Kim et al., Appl. Phys. Lett., 117, 245503 (2015); doi: 10.1063/1.4923048.
6. Highly Efficient Simple-Structure Red Phosphorescent OLEDs with an Extremely Low Doping Technology, W. S. Jeon et al., J. Info. Display, 10 (2), 87-91, (2009).
7. Efficient red, green, blue and white organic light-emitting diodes with same exciplex host, C-H. Chang et al., Jpn. J. Appl. Phys. 55, 03CD02 (2016); http://doi.org/10.7567/JJAP.55.03CD02.
8. Very-High Color Rendering Index Hybrid White Organic Light-Emitting Diodes with Double Emitting Nanolayers, B. Liu et al., Nano-Micro Lett., 6(4):335–339 (2014); DOI 10.1007/s40820-014-0006-4.
9. Study of Sequential Dexter Energy Transfer in High Efficient Phosphorescent White Organic Light-Emitting Diodes with Single Emissive Layer, J. Kim et al., Sci Rep., 4: 7009 (2014); doi: 10.1038/srep07009.
10. A white organic light-emitting diode with ultra-high color rendering index, high efficiency, and extremely low efficiency roll-off, N. Sun et al., Appl. Phys. Lett. 105, 013303 (2014); http://dx.doi.org/10.1063/1.4890217.

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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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