DCzDBT
CAS Number 913738-04-2
High Purity Sublimed Materials, Materials, Semiconducting Molecules, TADF Materials
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.
General Information
| CAS number | 913738-04-2 |
|---|---|
| Chemical formula | C36H22N2S |
| Molecular weight | 514.64 g/mol |
| Absorption | λmax 293 nm (in DCM) |
| Fluorescence | λem 385 nm (in DCM) |
| HOMO/LUMO | HOMO = 5.71 eV, LUMO = 2.19 eV [1] |
| 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 |
Product Details
| Purity | Sublimed >99.0% (HPLC) |
|---|---|
| Melting point | TGA >350 °C (0.5% weight loss) |
| Appearance | Off-white powder/crystals |
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials.
Chemical Structure
Device Structure(s)
| 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) [2] |
|---|---|
| Colour | Sky-blue 
|
| Max. EQE | 17.8% |
| 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) [3] |
|---|---|
| Colour | Sky-blue
|
| Max. EQE | 18% |
| 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) |
|---|---|
| Colour | Sky-blue
|
| Max. Current Efficiency | 10.72 cd/A |
| Max. EQE | 18.5 % |
Pricing
| Grade | Order Code | Quantity | Price |
|---|---|---|---|
| Sublimed (>99.0% purity) | M2267A1 | 100 mg | £200 |
| Sublimed (>99.0% purity) | M2267A1 | 250 mg | £400 |
| Sublimed (>99.0% purity) | M2267A1 | 500 mg | £660 |
| Sublimed (>99.0% purity) | M2267A1 | 1 g | £1100 |
MSDS Documentation
DCzDBT MSDS sheetLiterature 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.