2CzPN

2CzPN, highly efficient TADF sky blue emitter

High-purity (>99.0%) and available online in sensible quantities for priority dispatch

2CzPN is a highly efficient TADF sky blue emitter with two electron-donating carbazolyl moieties attached to the electron-withdrawing dicyanobenzene ring. The carbazolyl units are noticeably distorted from the dicyanobenzene plane by steric hindrance, leading to a small ΔE_ST of 0.09 eV.

When compared with 4CzIPN, 2CzPN has fewer carbazolyl groups which reduces its electron-donating ability and produces a shift of the emission maximum to shorter wavelength (473 nm).

General Information

Product Details

Chemical Structure

Device Structure(s)

Device structure	ITO/MoO3 (5 nm)/NPB (40 nm)/mCP (10 nm)/2CzPN: (tbt)2Ir(acac) (15 nm, 1.0 wt%)/Bphen (40 nm)/Mg: Ag (100 nm) [2]
Colour	Orange
Max. Power Efficiency	42.1 lm W−1
Max. Current Efficiency	77.9 cd/A
Max. EQE	26.8%
Max. Luminance Efficiency	119,900 cd/m2

Device structure	ITO/PEDOT:PSS/PVK:2CzPN (20 wt%, 20 nm)/QDs/ZnO (40 nm)/Al [3]
Colour	Red
Max. Power Efficiency	13.77 lm W−1
Max. Current Efficiency	17.33 cd/A
Max. EQE	12.37%

Device structure	ITO/TAPC (40 nm)/TCTA (20 nm)/DPSTPA* (75%):2CzPN (25%) (30 nm)/3TPYMB (80 nm)/LiF (1 nm)/Al (100 nm) [4]
Colour	Green
Max. Power Efficiency	62.7 ± 2.2 lm W−1
Max. Current Efficiency	59.9 ± 2.2 cd/A
Max. EQE	19.0 ± 0.6%

Device structure	ITO/HATCN (5 nm)/NPB (40 nm)/TCTA (10 nm)/mCP:6 wt% 2CzPN (11 nm)/TAZ:4 wt% PO-01 (4 nm)/TAZ (40 nm)/LiF (0.5 nm)/Al (150 nm) [5]
Colour	White
Max. Power Efficiency	80.1 lm W−1
Max. Current Efficiency	47.1 cd/A
Max. EQE	38.4%

Device structure	ITO/PEDOT:PSS (40 nm)/TAPC (20 nm)/TCTA (5 nm)/o-CzCN:2CzPN (4 wt%, 20 nm)/TmPyPB (40 nm)/LiF (1 nm)/Al (200 nm)  [6]
Colour	Blue
Max. Power Efficiency	18.36 lm W−1
Max. Current Efficiency	29.23 cd/A
Max. EQE	14.52%

Device structure	ITO/PEDOT:PSS (40 nm)/TAPC (20 nm)/TCTA (5 nm)/o-CzCN:2CzPN (4 wt%, 20 nm)/TmPyPB (40 nm)/LiF (1 nm)/Al (200 nm)  [7]
Colour	Blue
Max. Luminance Efficiency	6,366 cd/m2
Max. Current Efficiency	53.05 cd/A
Max. EQE	25.7%

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

Pricing

MSDS Documentation

2CzPN MSDS sheet

Literature and Reviews

1. Highly efficient organic light-emitting diodes from delayed fluorescence, H. Uoyama et al., Nature, 492, 234-240 (2012); doi: 10.1038/nature11687.
2. High-efficiency phosphorescent organic light-emitting devices with low efficiency roll-off using a thermally activated delayed fluorescence material as host, Y. Qi et al., Org. Electron., 36, 185-191 (2016); DIO: 10.1016/j.orgel.2016.05.043.
3. Efficient Quantum-Dot Light-Emitting Diodes Employing Thermally Activated Delayed Fluorescence Emitters as Exciton Harvesters, Y. Zhang et al., ACS Appl. Mater. Interfaces, 10, 7435−7441 (2018); DOI: 10.1021/acsami.7b16579.
4. Exciplex Organic Light-Emitting Diodes with Nearly 20% External Quantum Efficiency: Effect of Intermolecular Steric Hindrance between the Donor and Acceptor Pair, T. Wu et al, ACS Appl. Mater. Interfaces (2019); DOI: 10.1021/acsami.9b04365.
5. Highly efficient and color-stable hybrid warm white organic light-emitting diodes using a blue material with thermally activated delayed fluorescence, D. Zhang et al, J. Mater. Chem. C, 2, 8191 (2014); DOI: 10.1039/c4tc01289e.
6. Bipolar host materials for high-efficiency blue phosphorescent and delayed-fluorescence OLEDs, W. Li et al., J. Mater. Chem. C, 3, 12529 (2015); DOI: 10.1039/c5tc02997j.

To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, military, pharmaceuticals, cosmetics, food, or commercial applications.