Thermal Conductivity of FeCl3 Doped Polythiophene

Polythiophene (PT) was chemically synthesized, undoped and then doped with FeCl3. Doping concentration was changed by changing the duration of doping process. Results of FTIR analysis confirmed that synthesized sample was polythiophene and was doped by FeCl3 as desired. Elemental analysis of FeCl3 doped samples show that as the duration increases concentration of Fe+ ions increases. Analysis of XRD showed that after doping polythiophene by FeCl3, there were some modifications in crystal structure and there was an increase in crystallinity. Thermal conductivity (kappa) measurements of undoped and doped samples were carried out, using indigenously designed instrument similar to Lee's method, at various temperature from 303 K to 423 K. Thermal conductivity of undoped polythiophene at room (303 K) temperature matches with the reported value. Thermal conductivity increases with increase in temperature.