tDPA-DtCzB
CAS Number 2760492-67-7
Blue Dopant Materials, Dopant Materials, High Purity Sublimed Materials, Materials, MR-TADF Materials, OLED Materials,
High Color Purity MR-TADF Sky-Blue Emitter
High purity MR-TADF with CzBN core, sublimed ≥99%
Specifications | MSDS | Literature and Reviews
tDPA-DtCzB is a sky-blue MR-TADF emitter with high thermal stability and alleviated efficiency roll-off. tDPA-DtCzB consists of an indolo[3,2,1-de]indolo[3',2',1':8,1][1,4]benzazaborino[2,3,4-kl]phenazaborine (CzBN) core with peripheral tert-butyl groups, and a di(tert-butylphenyl)amine attached to the CzBN core opposite to the boron atom. The sterically hindered groups help to reduce the contact between neighbouring molecules and the formation of triplet excitons.
OLED based on tDPA-DtCzB as the emitter exhibits a narrowband sky-blue emission with the full-width at half-maximum (FWHM) of 29 nm, the maximum external quantum efficiency (EQE) of 31.0%, and a high EQEmax of 23.3% at the practical high luminance of 1000 cd m−2.
General Information
| CAS Number | 2760492-67-7 |
|---|---|
| Chemical Formula | C66H74BN3 |
| Molecular Weight | 920.12 g/mol |
| Absorption | λmax 456 nm (in Toluene) |
| Photoluminescence | λem 470 nm (in Toluene), FWHM = 21 nm |
| HOMO/LUMO | HOMO = - 5.24 eV, LUMO = - 2.38 eV |
| Synonyms | tDPA-DtCzB, 4-(4',4'-Di-tert-butyldiphenylamine)-2,6-bis(3,6-di-tert-butyl-9H-carbazol-9-yl)boron |
| Classification or Family | Indolo[3,2,1-de]indolo[3',2',1':8,1][1,4]benzazaborino[2,3,4-kl]phenazaborine (CzBN) derivative, Triphenylboron, MR-TADF blue emitter, TADF dopant materials, Sublimed materials |
Product Details
| Purity | Sublimed ≥99% |
|---|---|
| Melting point | Td = 499 °C |
| Appearance | Yellow greenish powder/crystals |
Chemical Structure
Device Structure(s)
| Device Structure | ITO/TAPC (50 nm)/TCTA (5 nm)/PhCzBCz:20 wt% Firpic: 1.0 wt.% tDPA-DtCzB (30 nm)/TmPyPB (30 nm)/LiF (1 nm)/Al (100 nm) [1] |
|---|---|
| Color |  Sky-blue emission at 480 nm |
| CIE Coordinates | (0.11, 0.23) |
| FWHM | 27 |
| Turn-on Voltage (Von) | 3.1 eV |
| Max Luminance | 4,533 cd m-2 |
| Max Current Efficiency | 40.3 cd A-1 |
| Max Power Efficiency | 40.8 lm W-1 |
| Max EQE | 28.9% |
MSDS Documentation
tDPA-DtCzB MSDS SheetLiterature and Reviews
- X. Yuan et al. (2022); Achieving highly efficient narrowband sky-blue electroluminescence with alleviated efficiency roll-off by molecular-structure regulation and device-configuration optimization, J. Mater. Chem. C, 10, 15408-15415; DOI: 10.1039/D2TC03249J.
- M. Mamada et al. (2024); Organoboron-based multiple-resonance emitters: synthesis, structure–property correlations, and prospects, Chem. Soc. Rev., 53, 1624-1692; DOI: 10.1039/D3CS00837A.