4CzPN

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

Chemical Structure

Product Details

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

MSDS Documentation

4CzPN MSDS Sheet

Literature and Reviews

1. 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.
2. 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.
3. 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.