posted on 2018-05-16, 00:00authored byMiriam Más-Montoya, Stamatis Georgakopoulos, José Pedro Cerón-Carrasco, José Pérez, Alberto Tárraga, David Curiel
A comparative
study of carbazolocarbazole isomers and their respective N-alkyl derivatives confirms the good performance of carbazolo[2,1-a]carbazole as hole-transporting material in organic field
effect transistors. The azaphenacene structure of this molecule forms
a dense packing promoted by particularly short longitudinal shifts
between molecules establishing face-to-face and edge-to-face interactions.
Computational calculations have determined an almost isotropic 2D
transport environment within a lamellar structure. This favorable
solid state arrangement, in combination with appropriate interfacial
layers, has led to a high mobility (1.3 cm2 V–1 s–1) that validates the aptitude of this molecular
material as an organic semiconductor.