A highly efficient TADF green emitter
As an alternative choice to 4CzIP and 4CzTPN TADF green emitters in TADF-OLED devices.
Specifications | Pricing and Options | MSDS | Literature and Reviews
4CzPN is one of three isomers (including 4CzTPN and 4CzIPN) which belong to the carbazolyl benzonitriles (CBC) family. CBC family members are well known, highly efficient thermally activated delayed fluorescence (TADF) materials.
The carbazolyl groups are located next and opposite to the nitrile groups, electrons in 4CzPN orbitals are supposedly more delocalized than its isomers. However, with four bulky carbazolyl groups next to each other, the steric hindrance can reduce the conjugation of the carbazolyl groups to the centre benzene ring.
General Information
CAS Number | 1416881-51-0 |
Full Name | 3,4,5,6-tetrakis(carbazol-9-yl)-1,2-dicyanobenzene |
Synonyms | 1,2,3,4-tetrakis(carbazol-9-yl)-5,6-dicyanobenzene |
Chemical Formula | C56H32N6 |
Molecular Weight | 788.27 g/mol |
Absorption | λmax 315, 325, 364 nm in toluene |
Fluorescence | λem 528 nm in toluene |
HOMO/LUMO | HOMO = 5.83 eV, LUMO = 3.38 eV; T1=2.50 eV [1] |
Classification / Family | Carbazole, TADF materials, Green dopant materials, Sublimed materials |
Chemical Structure
Product Details
Purity | Unsublimed >98.0% (HPLC), Sublimed >99% (HPLC) |
Melting Point | >360 °C (lit.) |
Appearance | Orange powder/crystals |
Device Structure(s)
Device Structure | ITO/MoO3 (8 nm)/TAPC (60 nm)/TCTA (5 nm)/FIrpic (0.5 nm)/SPA-TXO2* : 4CzPN(25 nm)/TPBi (60 nm)/LiF (0.5 nm)/Al (100 nm) [1] |
Colour | Green |
Max. Current Efficiency | 43.5 cd/A |
Max. EQE | 13.1% |
Max. Power Efficiency | 42.6 Im/W |
Device Structure | ITO/MoO3 (8 nm)/TAPC (60 nm)/TCTA (5 nm)/FIrpic (0.5 nm)/o-CzTHZ* : 4CzPN(25 nm)/TPBi (60 nm)/LiF (0.5 nm)/Al (100 nm) [1] |
Colour | Green |
Max. Current Efficiency | 61.1 cd/A |
Max. EQE | 17.9% |
Max. Power Efficiency | 50.5 Im/W |
Device Structure | ITO/HATCN (10 nm)/Tris-PCz (35 nm)/10 wt.% 4CzPN:mCBP (G-EML) (3 nm)/6 wt.% 4CzPN:2 wt.% 4CzTPN-Ph:mCBP (R-EML) (2 nm)/10 wt.% 3CzTRZ:PPT (B-EML) (10 nm)/PPT (50 nm)/LiF (0.8 nm)/Al (100 nm) [2] |
Colour | White |
Max. Power Efficiency | 30.3 lm W−1 |
Max. Current Efficiency | 38.6 cd/A |
Max. EQE | 17.6% |
Device Structure | ITO/HATCN (10 nm)/Tris-PCz (35 nm)/10 wt.% 4CzPN:mCBP (G-EML) (5 nm)/6 wt.% 4CzPN:2 wt.% 4CzTPN-Ph:mCBP (R-EML) (4 nm)/10 wt.% 3CzTRZ:PPT (B-EML) (6 nm)/PPT (50 nm)/LiF (0.8 nm)/Al (100 nm) [2] |
Colour | White |
Max. Power Efficiency | 34.1 lm W−1 |
Max. Current Efficiency | 45.6 cd/A |
Max. EQE | 17.0% |
Device Structure | ITO (95 nm)/HATCN (10 nm)/ TAPC (45 nm)/TCTA (5 nm)/0.4 wt% TBRb: 6 wt% 4CzPN (8 nm)/0.8 wt% TBRb: 10 wt% 4CzPN: mCBP (4 nm)/40 wt% Bepp2: mCBP (5 nm)/Bepp2 (3 nm)/5 wt% DSA-Ph*: MADN (8 nm)/TmPyPB (50 nm)/LiF (1 nm)/Al (100 nm) [3] |
Colour | White |
Max Current Efficiency | 48.9 cd/A |
Max EQE | 15.1% |
Max. Power Efficiency | 47.4 lm W-1 |
Device Structure | ITO (95 nm)/ HATCN (10 nm)/ NPB (40 nm)/ TCTA (10 nm)/ 0.8 wt.% TBRb: 10wt.% 4CzPN: mCBP (12 nm)/ 30 wt.% Bepp2: mCBP (5 nm)/ Bepp2 (3 nm)/ 5 wt.% DPAVBi:MADN (8 nm)/ Bepp2 (50 nm)/ LiF (1 nm)/ Al (100 nm) [3] |
Colour | White |
Max. Power Efficiency | 37.6 lm W−1 |
Max. Current Efficiency | 38.1 cd/A |
Max. EQE | 11.9% |
*For chemical structure information, please refer to the cited references.
Pricing
Grade | Order Code | Quantity | Price |
Unsublimed (>98.0% purity) | M2221B1 | 250 mg | £220 |
Unsublimed (>98.0% purity) | M2221B1 | 500 mg | £360 |
Unsublimed (>98.0% purity) | M2221B1 | 1 g | £580 |
Sublimed (>98.0% purity) | M2221A1 | 250 mg | £370 |
Sublimed (>98.0% purity) | M2221A1 | 500 mg | £620 |
Sublimed (>98.0% purity) | M2221A1 | 1 g | £1050 |
MSDS Documentation
Literature and Reviews
- A new way towards high-efficiency thermally activated delayed fluorescence devices via external heavy-atom effect, W. Zhang et al., Sci. Rep., 6, 30178 (2016); doi: 10.1038/srep30178.
- High-efficiency white organic light-emitting diodes using thermally activated delayed fluorescence, J. Nishide et al., Appl. Phys. Lett. 104, 233304 (2014); doi: 10.1063/1.4882456.
- Exciton-Adjustable Interlayers for High Efficiency, Low Efficiency Roll-Off, and Lifetime Improved Warm White Organic Light-Emitting Diodes (WOLEDs) Based on a Delayed Fluorescence Assistant Host, Z. Wang et al., Adv. Funct. Mater., 28, 1706922 (2018); DOI: 10.1002/adfm.201706922.