N4,N4,N4'',N4''-tetra([1,1'-biphenyl]-4-yl)-[1,1':4',1''-terphenyl]-4,4''-diamine (TaTm), CAS number 952431-34-4, is a triarylamine with a linear terphenyl core and four biphenyl side arms. With high thermal stability and excellent intrinsic hole mobility of 4 × 10-3 cm2 V-1 s-1, TaTm is electron rich and it is normally used as a hole transport layer (HTL) material in organic electronic devices.

Together with MoO3, TaTm is widely used in vacuum processed p-i-n perovksite solar cells as hole transport bilayers to improve the charge separation. Annealing the bilayer at high temperature is crucial to obtain high rectification with low non-radiative recombination, owing to the increase of the electrode work function and the formation of an ohmic interface with TaTm.

General Information

Product Details

* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.

Chemical Structure

N4,N4,N4'',N4''-tetra([1,1'-biphenyl]-4-yl)-[1,1':4',1''-terphenyl]-4,4''-diamine (TaTm) chemical structure, 952431-34-4