TDBA-DI
CAS Number 2378498-85-0
Blue Dopant Materials, High Purity Sublimed Materials, Materials, MR-TADF Materials, OLED Materials, Semiconducting Molecules,
Highly Efficient MR-TADF Deep-blue Emitter
High purity D-A type MR-TADF material, sublimed ≥99%, CAS No. 2378498-85-0
Specifications | MSDS | Literature and Reviews
TDBA-DI is a MR-TADF blue emitter consisting of a tert-butyl decorated DOBNA core acceptor and a 10,15-dihydro-5H-diindolo[3,2-a:3',2'-c]carbazole donor unit. Benefiting from the large steric hindrance between the donor and the oxygen-bridged boron acceptor, TDBA-DI shows a small ΔEST and fast kRISC in the doped film and an EQEmax of 32.2% with Commission International de I'Eclairage (CIE; 0.14, 0.15) in the OLED device.
TDBA–DI shows deep-blue emission in toluene and a small singlet–triplet energy gap of 0.11 eV and 20wt%-doped films of TDBA–DI in DBFPO host exhibits high photoluminescence quantum yields of 99%. Fabricated TDBA–DI blue emitting OLED device shows a high external quantum efficiency of 38.15% with low roll-off characteristics of 25.2% at high luminance of up to 5,000 cd m–2. Also TADF devices based on TDBA-DI achieve a below-bandgap turn-on voltage of 2.5 V and an external quantum efficiency of 41.2% by using a polymer semiconductor T2fQ as HTL and TSPO1 as ETL materials with suppressed efficiency roll-off maintaining an EQE of 34.8% at 1000 cd m–2.
General Information
| CAS Number | 2378498-85-0 |
|---|---|
| Chemical Formula | C62H48BN3O2 |
| Molecular Weight | 877.87 g/mol |
| Absorption | λmax 313, 378 nm (in THF) |
| Photoluminescence | λem 458 nm (in Film) |
| HOMO/LUMO | HOMO = - 5.5 eV, LUMO = - 2.6 eV |
| Synonyms | 5-(2,12-Di-tert-butyl-5,9-dioxa-13b-boranaphtho[3,2,1-de]anthracen-7-yl)-10,15-diphenyl-10,15-dihydro-5H-diindolo[3,2-a:3',2'-c]carbazole |
| Classification or Family | 5,9-dioxa-13b-boranaphtho[3,2,1-de]anthracene (DOBNA) derivative, MR-TADF deep-blue emitter, Sublimed materials |
Product Details
| Purity | Sublimed ≥99% |
|---|---|
| Melting point | DSC: Tg = 240.6 °C |
| Appearance | White to light-yellow to yellow powder/crystals |
Chemical Structure
Device Structure(s)
| Device Structure | ITO/NPD (40 nm)/ T2fQ (15 nm)/TDBA-DI 20 wt.%-doped in DBFPO (30 nm)/TSPO1 (30 nm)/LiF (1 nm)/Al (100 nm) [1] |
|---|---|
| Color |
 Blue light emission at 458 nm |
| CIE Coordinates | (0.15,0.28) |
| Turn-on Voltage (Von) | 2.5 eV |
| Max Luminance | 49,530 cd m-2 |
| Max Current Efficiency | 72.19 cd A-1 |
| Max Power Efficiency | 87.18 lm W-1 |
| Max EQE | 41.22% |
MSDS Documentation
TDBA-DI MSDS SheetLiterature and Reviews
- M. Vasilopoulou et al. (2021); High efficiency blue organic light-emitting diodes with below-bandgap electroluminescence, Nat. Commun., 12, 4868; DOI: 10.1038/s41467-021-25135-z.
- D. Ahn et al. (2019); Highly efficient blue thermally activated delayed fluorescence emitters based on symmetrical and rigid oxygen-bridged boron acceptors, Nat. Photonics 13, 540–546; DOI: 10.1038/s41566-019-0415-5.
- W. Sun et al. (2023); Highly Efficient and Spectrum-Tunable Hybrid Tandem White Organic Light-Emitting Diodes Achieved by Strategic Exciton Management based on Ultrathin Emitting Layer Structures, Adv. Optical Mater., 11 (22), 230092; DOI 10.1002/adom.202300902.