Electrical Characterization of Cu-Doped PEDOT:PSS Polymeric Thin Films

Abstract

In this study we investigate the electrical properties in the transparent conductive polymer poly(3,4-ethylendioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and Cu-doped polymer (PEDOT:PSS 1.3% + CuCl2) using Hall measurements under the Van der Pauw configuration. The influence of doping on the electrical conductivity, Hall mobility, and carrier concentration is demonstrated in Cu-PEDOT:PSS and compared with pure PEDOT:PSS. Through this, we figured out there are difficulties in preparing Cu-doped (PEDOT:PSS 1.3% + CuCl2) polymeric thin films. The sheet resistance was measured to determine the electrical conductivity, aided by knowledge of the thin film thickness. Temperature dependency was evaluated using a closed cycle cryostat, covering temperatures ranging from 8K to 300 K. These comprehensive measurements provide valuable insights into the electrical behavior and temperature characteristics of PEDOT:PSS and PEDOT:PSS 1.3% + CuCl2, facilitating the development of high-performance organic electronic devices.

Keywords

• conductive polymer
• PEDOT:PSS
• electrical conductivity
• Hall measurements