DCzDBT
CAS Number 913738-04-2
High Purity Sublimed Materials, Materials, OLED Materials, Semiconducting Molecules, TADF Materials
DCzDBT, for blue TADF devices achieving excellent EQE
HBL material to significantly improve device operational lifetimes, 2,8-Di(9H-carbazol-9-yl)dibenzo[b,d]thiophene, CAS No. 913738-04-2, Sublimed ≥99.0%
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] |
|---|---|
| Color | 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] |
|---|---|
| Color | 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) |
|---|---|
| Color | Sky-blue
|
| Max. Current Efficiency | 10.72 cd/A |
| Max. EQE | 18.5 % |
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.