High Performance Conjugated Polymer for Organic Thin Film

Researchers in Prof. Zhenan Bao's laboratory have invented a novel semiconducting material containing siloxane-containing side chains. This material demonstrates high charge carrier mobility, as well as air and operational stability in field effect transistor devices. Conceivably, it can be used in other optoelectronics such as sensors.

A conjugated polymer made with the novel siloxane-terminated solubilizing group exhibited a pi-pi stacking distance of 3.58 Angstroms which led to superior performance in a thin film field effect transistor (maximum mobility of 2.48 cm2/Vs).

Stage of Research
The inventors have demonstrated that this novel siloxane-terminated solubilizing group is an effective side chain in an isoindigo-based conjugated polymer and used the polymer to create a thin-film transistor with one of the highest mobilities to date.