DBF-TRZ
CAS Number 2040300-54-5
High Purity Sublimed Materials, Host Materials, Materials, OLED Materials,
Triazine Derivatives of High Triplet Energy Above 2.8 eV
High purity exciton electron transport type exciton blocking material, sublimed (≥99%)
Specifications | MSDS | Literature and Reviews
DBF-TRZ is a high triplet energy exciton, electron transport type, exciton blocking material primarily developed for blue PHOLEDs to effectively block hole carriers. DBF-TRZ features an electron rich dibenzo-[b,d]furan center unit and two electron deficient 4,6-diphenyl-1,3,5-triazine moieties. With a high triplet energy above 2.8 eV, known to enhance the external quantum efficiency (EQE) of the blue phosphorescent devices by more than 40% while maintaining operational stability of the devices.
Also, the high triplet energy material has been used in hyper OLEDs to confine the triplet exciton of the MR-TADF dopant materials to achieve narrow green emission band with an LT95 of over 3000 h at 1000 cd m−2. Electroplex formed between 4,4′-di(9H-carbazol-9-yl)-1,1′-biphenyl (CBP) and DBF-TRZ is engaged as a universal host in red, yellow, green, and blue PhOLEDs for improved efficiency and lifetime.
General Information
| CAS Number | 2040300-54-5 |
|---|---|
| Chemical Formula | C42H26N6O |
| Molecular Weight | 630.7 g/mol |
| Absorption | λmax N/A |
| Fluorescence | λem N/A |
| HOMO/LUMO | HOMO = - 6.7 eV, LUMO = - 3.1 eV |
| Synonyms | DBFTRz, 2,8-Bis(4,6-diphenyl-1,3,5-triazin-2-yl)dibenzo-[b,d]furan |
| Classification or Family | Triazine derivative, Hole blocking layer (HBL), Universal host, Sublimed materials. |
Product Details
| Purity | Sublimed (≥99%) |
|---|---|
| Melting Point | Td > 370 °C (5% weight loss) |
| Appearance | white to off-white powder/crystals |
* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.
Chemical Structure
Device Structure(s)
| Device Structure | ITO (100 nm)/polymer buffer [13] (20 nm)/NPD (10 nm)/4DBFHPB (10 nm)/mCBP doped with 12 wt.% Ir(ppy)3 (15 nm)/DBF-TRZ (10 nm)/T3PyTRZ:20 wt.% Liq doped (40 nm)/Liq (1 nm)/Al (100 nm) [1] |
|---|---|
| Color |
 Green |
| Turn-on Voltage (Von) | 2.64 V |
| Current Efficiency@100 cd m-2 | 90.5 cd/A |
| Power Efficiency@100 cd m-2 | 88.1 lm W-1 |
| EQE@100 cd m-2 | 25.1% |
| LT50@1000 cd m-2 | 16,281 h |
| Device Structure | ITO (100 nm)/polymer buffer [13] (20 nm)/NPD (10 nm)/4DBFHPB (10 nm)/DIC-TRZ doped with 12 wt.% Ir(ppy)3 (15 nm)/DBF-TRZ (10 nm)/T3PyTRZ:20 wt.% Liq doped (40 nm)/Liq (1 nm)/Al (100 nm) [1] |
|---|---|
| Color |
Green |
| Turn-on Voltage (Von) | 2.18 V |
| Current Efficiency@100 cd m-2 | 81.9 cd/A |
| Power Efficiency@100 cd m-2 | 104.9 lm W-1 |
| EQE@100 cd m-2 | 22.9% |
| LT50@1000 cd m-2 | 31,662 h |
| Device Structure | ITO (100 nm)/Polymer Buffer (20 nm)/NPD (10 nm)/4DBFHPB (10 nm)/DIC-TRZ:20 wt.% Ir(ppy)3: 5 wt.% RPXZ-tCzBN (30 nm)/DBF-TRZ (10 nm)/20 wt.% Liq-doped T3PyTRZ (40 nm)/Liq (1 nm)/Al [2] |
|---|---|
| Color |
Green |
| Turn-on Voltage (Von) | 2.15 V |
| Max Current Efficiency | 110.6 cd/A |
| Max Power Efficiency | 150.3 lm W-1 |
| Max EQE | 27.6% |
| LT95/LT90@1000 cd m-2 | 3002/8632 h |
MSDS Documentation
DBF-TRZ MSDS SheetLiterature and Reviews
- Y. Kang et al. (2016); High triplet energy electron transport type exciton blocking materials for stable blue phosphorescent organic light-emitting diodes, Org. Electron., 32, 109-114; DOI: 10.1016/j.orgel.2016.02.025.
- W. Song et al. (2017); High triplet energy exciplex hosts for deep blue phosphorescent organic light-emitting diodes, J. Mater. Chem. C, 5, 5923-5929; DOI: 10.1039/C7TC01552F.
- T. Kawano et al. (2023); Tetrapyridine/triphenyltriazine-conjugated electron transporters for low-power-consumption, high-stability phosphorescent OLEDs, J. Mater. Chem. C, 11, 4129-4135; DOI: 10.1039/d2tc04647d.