Basic information:
4,4',4''-Tris[phenyl(m-tolyl)amino]triphenylamine, m-MTDATA acts as an effective material for the hole-injection buffer layer (HIL) that facilitates hole injection from the ITO electrode to the hole transporting layer (HTL).
With its very low solid-state ionisation potential and good-quality amorphous film, 4,4',4''-Tris[phenyl(m-tolyl)amino]triphenylamine, m-MTDATA acts as an effective material for the hole-injection buffer layer (HIL) that facilitates hole injection from the ITO electrode to the hole transporting layer (HTL). This potentially lowers the driving voltage of the OLED devices.
F4-TCNQ,a strong electron acceptor, is always used together with m-MTDATA as a p-doping material to improve the conductivity of the HTL buffering layer. Typical structure of the device (or part of the device) is ITO/p-doped m-MTDATA/HTL/etc.
| CAS number |
124729-98-2 |
| Chemical formula |
C57H48N4 |
| Molecular weight |
789.02 g/mol |
| Absorption |
λmax 312 nm, 342 nm in THF |
| Fluorescence |
λem 425 nm in THF |
| HOMO/LUMO |
HOMO 5.1 eV, LUMO 2.0 eV [1] |
| Synonyms |
4,4′,4”-Tris[(3-methylphenyl)phenylamino]triphenylamine |
| Classification / Family |
Triphenylamine derivatives, Hole-injection materials, Hole transporting materials, Light-emitting diodes, Organic electronics |
Device Structure(s)
| Device structure |
ITO/MoOx (2 nm)/m-MTDATA: MoOx (30 nm, 15 wt.%)/m-MTDATA (10 nm)/Ir(ppz)3 (10 nm)/CBP:PO-01* (3 nm, 6 wt.%)/Ir(ppz)3
(1 nm)/DBFDPOPhCz*:FIrpic (10 nm,10 wt.%)/Bphen (36 nm)/LiF (1 nm)/Al [3] |
| Colour |
White  |
| Max. EQE |
12.2% |
| Max. Current Efficiency |
42.4 cd/A |
| Max. Power Efficiency |
47.6 lm W−1 |
| Device structure |
ITO/[F4-TCNQ(x nm)/m-MTDATA(y nm)]n/NPB/Alq3/Bphen/Cs2CO3/Al [4] |
| Colour |
Green  |
| Max. Luminance |
23,500 cd/m2 |
| Max. Current Efficiency |
7.0 cd/A |
| Max. Power Efficiency |
4.46 lm W−1 |
| Device structure |
ITO/PEDOT:PSS AI 4083(40nm)/m-MTDATA:Ir(Flpy-CF3)3 (40nm)/TmPyPB(55nm)/LiF(0.5nm)/Al(100nm) [5] |
| Colour |
Yellow  |
| Max. EQE |
25.2% |
| Max. Luminance |
43,085 cd/m2 |
| Max. Current Efficiency |
74.3 cd/A |
| Max. Power Efficiency |
97.2 lm W−1 |
***Product manager: Joy Wu Email: Joy@coreychem.com
