9 research outputs found
Charge carrier mobility in sulphonated and non-sulphonated Ni phthalocyanines: experiment and quantum chemical calculations
The objective of this interdisciplinary paper was to study theoretically and
experimentally the electronic part of charge carrier transport in the class
of sodium salts of sulphonated Ni phthalocyanine as candidates for p-type
channels in organic field-effect transistors. These materials were selected
because of their enhanced solubility as compared to their non-sulphonated
counterparts. The values of the field-effect charge carrier mobility
determined on the OFET structures using NiPc(SO3Na)x films were
much higher than the charge carrier mobility obtained on the respective
device prepared from non-substituted phthalocyanine. In order to explain
differences between charge carrier mobility of sulphonated and
non-sulphonated Ni phthalocyanines, quantum chemistry studies of molecular
aggregates were performed. Quantum chemistry modeling of the semiconductive
molecular systems is new and progressive – we highlighted factors at the
molecular level which led to the enhancement of the charge carrier mobility
in systems containing SO3Na groups