BCzPh

9,9'-Diphenyl-9H,9'H-3,3'-bicarbazole (BCzPh), with two conjugated carbazole units, is an electron-rich host material used for phosphorescent organic light-emitting diodes (PHOLEDs). Being electron-rich, BCzPh is also used as an electron donor to form exciplexes either as an emitting layer or host material for highly-efficient fluorescent and phosphorescent OLED devices.

With the dimerisation of carbazoles (and thus the blocked 3 and 3') positions, BCzph can greatly reduce the host-host aggregation, causing excimer formation. With a higher T_g, it can also improve thermal and morphological stability of thin films.

BCzPh is an isomer of CBP and mCBP which are used as universal host materials for blue, red, green and white electroluminescent OLED devices.

General Information

Product Details

*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	BCzPh:FIrpic (8%, 20 nm)/TmPyPB (50 nm)/Liq (2 nm)/Al (120 nm) [1]
Colour	Blue
Max Current Efficiency	34.3 cd/A
Max EQE	14.4%
Max. Power Efficiency	32.5 lm W-1

Device structure	ITO (130 nm)/ TAPC (40 nm)/BCzPh:FIrpic (11 w%, 10 nm)/ B3PyPB (50 nm)/ LiF (1 nm)/ Al (100 nm) [2]
Colour	Blue
Current Efficiency@100 cd/m2	43.9 cd/A
Max EQE@100 cd/m2	19.8%
Power Efficiency@100 cd/m2	45.2 lm W-1

Device structure	ITO (80 nm)/HAT-CN (10 nm)/TAPC (30 nm)/BCzPh (10 nm)/BCzPh:3P-T2T (30 nm; 2:1)/3P-T2T (70 nm)/LiF (1 nm)/Al (100 nm) [3]
Colour	Green
Max EQE	11.7%
Max. Power Efficiency	44.9 lm W-1

Device structure	ITO (80 nm)/HAT-CN (10 nm)/TAPC (30 nm)/BCzPh (10 nm)/ BCzPh:3PT2T:8 wt % Ir(ppy)2(acac)/3P-T2T (70 nm)/LiF (1 nm)/Al (100 nm) [3]
Colour	Green
Max EQE	25.8%
Max. Power Efficiency	143.4 lm W-1

Device structure	ITO/MoO3 (3 nm)/TAPC (35 nm)/TCTA (5 nm)/BCzPh:10 w%FIrPic (20 nm)/TmPyPB (50 nm)/LiF (0.5 nm)/Mg:Ag (15:1, 120 nm) [4]
Colour	Blue
Max Current Efficiency	23.8 cd/A
Max Luminescence	11,570 cd/m2
Max. Power Efficiency	22.1 lm W-1

Device structure	ITO/MoO3 (3 nm)/TAPC (35 nm)/TCTA (5 nm)/BCzPh:7 w%PO-01 (20 nm)/TmPyPB (50 nm)/LiF (0.5 nm)/Mg:Ag (15:1, 120 nm) [4]
Colour	Yellow
Max Current Efficiency	33.2 cd/A
Max Luminescence	26,740 cd/m2
Max. Power Efficiency	29.8 lm W-1

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

Pricing

MSDS Documentation

BCzPh MSDS sheet

Literature and Reviews

1. Bipolar host materials for high efficiency phosphorescent organic light emitting diodes: tuning the HOMO/LUMO levels without reducing the triplet energy in a linear system, L. Cui et al., J. Mater. Chem. C, 1, 8177-8185 92013); DOI: 10.1039/C3TC31675K.
2. 3,3′-Bicarbazole-Based Host Materials for High-Efficiency Blue Phosphorescent OLEDs with Extremely Low Driving Voltage, H. Sasabe et al., Adv. Mater., 24, 3212–3217 (2012); DOI: 10.1002/adma.201200848.
3. Lifetime of Fluorescent and Phosphorescent Organic Light-Emitting
   Diodes, C-J. Shih et al., ACS Appl. Mater. Interfaces, 10, 24090−24098 (2018); DOI: 10.1021/acsami.8b08281.
4. 4, 6-Bis[3-(dibenzothiophen-2-yl)phenyl] pyrimidine bipolar host for bright, efficient and low efficiency roll-off phosphorescent organic light-emitting devices, J. Yu et al., Org. Electronics 38, 301-306 (2016); DIO: 10.1016/j.orgel.2016.09.002.

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.