Hole mobility in thieno[3,2-b]thiophene oligomers

A study of transient and steady state electrical currents in the solution-processed thin films of thieno[3,2-b]thiophene oligomers has demonstrated charge carrier mobility of about 10−2 cm2 V−1 s−1. Thieno[3,2-b]thiophene moieties serve as reasonable charge transport sites providing the high mobility. Varying end alkyl chains in such oligomers is suggested as a viable tool to tune the mobility.