DCzDBT, for blue TADF devices achieving excellent EQE
HBL material to significantly improve device operational lifetimes
DCzDBT, also referred to as mCBT, is a carbazole-based bipolar host material containing two carbazole and one dibenzothiophene units for blue thermally activated delayed fluorescent (TADF) devices achieving excellent external quantum efficiencies (EQE).
With a wide bandgap, DCzDBT has also been used as hole blocking layer (HBL) material to replace BAlq to significantly improve device operational lifetimes.
|Molecular weight||514.64 g/mol|
|Absorption||λmax 293 nm (in DCM)|
||λem 385 nm (in DCM)|
|HOMO/LUMO||HOMO = 5.71 eV, LUMO = 2.19 eV |
|Full chemical name||2,8-Di(9H-carbazol-9-yl)dibenzo[b,d]thiophene|
|Synonyms||mCBT, ZDZ, 2,8-Bis(9H-carbazol-9-yl)dibenzothiophene, 9,9'-(2,8-Dibenzothiophenediyl)bis-9H-carbazole|
|Classification / Family||Carbazole derivatives, TADF host materials, Sublimed materials|
|Purity||Sublimed >99.0% (HPLC)|
|Melting point||TGA >350 °C (0.5% weight loss)|
*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.
|Device structure||ITO/HATCN (10 nm)/NPD (40 nm)/TrisPCz/10% PtN'1N-tBu:mCBP (25nm)/DCzDBT (8 nm)/BPyTP (40 nm)/LiF (1 nm)/Al (100 nm) |
|Device structure||ITO (40 nm)/HATCN (10 nm)/NPD (40 nm)/Tris-PCz (10 nm)/20% PtNON:mCBP (10 nm)/10% PtNON:mCBP (4 nm)/2% TBPe:mCBP (2 nm)/10% PtNON:mCBP (4 nm)/6% PtNON:mCBP (10 nm)/DCzDBT (8 nm)/ BPyTP (40 nm)/LiF (1 nm)/AL (100 nm) |
|Device structure||ITO (50 nm)/HATCN (7 nm)/TAPC (75 nm)/2CzPN 6 wt% DCzDBT (20 nm)/TmPyPB (50 nm)/LiF (1.5 nm)/Al (100 nm)|
|Max. Current Efficiency||10.72 cd/A|
|Max. EQE||18.5 %|
|Sublimed (>99.0% purity)||M2267A1||100 mg||£150.00|
|Sublimed (>99.0% purity)||M2267A1||250 mg||£300.00|
|Sublimed (>99.0% purity)||M2267A1||500 mg||£500.00|
|Sublimed (>99.0% purity)||M2267A1||1 g||£850.00|
Literature and Reviews
- High-performing Bipolar Host Materials for Blue Thermally Activated Delayed Fluorescent Devices with Excellent External Quantum Efficiencies, J. Kang et al., J. Mater. Chem. C,4, 4512-4520 (2016); DOI: 10.1039/C6TC00385K.
- Stable and Efficient Sky-blue Organic Light Emitting Diodes Employing a Tetradentate Platinum Complex, G. Li et al., Appl. Phys. Lett. 110, 113301 (2017); DOI: 10.1063/1.4978674.
- Efficient Blue Phosphorescent OLEDs with Improved Stability and Color Purity through Judicious Triplet Exciton Management, K. Klimes et al., Adv. Funct. Mater., 29 (31); 1903068 (2019); DOI: 10.1002/adfm.201903068.
- Highly Efficient and Stable Narrow-Band Phosphorescent Emitters for OLED Applications, G. Li et al., Adv. Optical Mater., 3 (3), 1400341 (2014); DOI: 10.1002/adom.201400341.
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. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.