TXO-TPA has an ambipolar D-A type structure with TXO as the electron-accepting and triphenylamine (TPA) as the electron-donating unit. The twice-oxidised thiophene on TXO moiety can greatly enhance the electron-accepting ability as the channel for higher electron mobility. On the other hand, electron-rich TPA is used as the channel for higher hole mobility.

TXO-TPA is commonly used as a red dopant material in TADF-OLED devices. This is due to its high device performance capabilities with high external quantum efficiency (EQE).

General Information

Product Details

*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/PEDOT (30 nm)/TAPC (20 nm)/5 wt%TXO-TPA:mCP (35 nm) /TmPyPB (55 nm)/LiF(0.9 nm)/Al [1]
Colour	Yellow
Current Efficiency@100 cd/m2	43.3 cd/A
EQE@100 cd/m2	18.5 %
Power Efficiency@100 cd/m2	47.4 lm W-1

Device structure	ITO/PEDOT (20 nm)/TAPC (30 nm)/TXO-TPA (0.5 nm)/4P-NPB* (0.5 nm)/mCP (10 nm)/TmPyPB (50 nm)/LiF (0.9 nm)/Al (100 nm) [2]
Colour	White
Max. Current Efficiency	10.5 cd/A
Max. EQE	4.4%
Max. Power Efficiency	8.9 lm W-1