4,4'-(Diphenylsilanediyl)bis(N,N-diphenylaniline) (TSBPA) is diphenylsilyl based with two electron donating triphenylamine units. For its electron rich nature, TSBPA is normally used as a high triplet energy hole transport material for blue phosphorescent organic light-emitting diodes (PHOLEDs).

Also due to its electron donating nature, TSBPA can also be used together with electron accepting materials to form exciplex as emitting layer materials. Green PhOLEDs based on TSBPA:PO-T2T exciplex showed TADF emission with close to the maximum theoretical power efficiency and EQE of 60.9 cd/A, 71 Im/W and 20% respectively.

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/ NPB (30 nm)/TSBPA (10 nm)/TSBPA:POT2T (20nm)/PO-T2T(50 nm)/LiF(1 nm)/Al (100 nm) [1]
Colour	Green
Max. Luminance	31,000 cd/m2
Max. EQE	20.0%
Max. Current Efficiency	60.9 cd/A
Max. Power Efficiency	71.0 Im/W

Device structure	ITO/NPB (40 nm)/TSBPA (10 nm)/DDMA-TXO2 (I):DPEPO (30 nm)/DPEPO (10 nm)/TPBi (40 nm)/LiF/Al [2]
Colour	Blue
Max. Luminance	4,204 cd/m2
Max. EQE	21.2%
Max. Current Efficiency	36.8 cd/A
Max. Power Efficiency	27.5 Im/W

Device structure	ITO/NPB (40 nm)/TSBPA (10 nm)/DDMA-TXO2 (III):DPEPO (30 nm)/DPEPO (10 nm)/TPBi (40 nm)/LiF/Al [2]
Colour	Blue
Max. Luminance	2,765 cd/m2
Max. EQE	22.6%
Max. Current Efficiency	31.7 cd/A
Max. Power Efficiency	24.3 Im/W

Device structure	ITO/NPB (40 nm)/TSBPA (10 nm)|TSBPA:PO-T2T 1:1 in 50 vol % UGH-3 (40 nm)|POT2T (50 nm)|LiF (1 nm)|Al (100 nm) [3]
Colour	Green
Max. EQE	19.2 %