Conducting poly(3,4-ethylenedioxythiophene):poly(styrene-4-sulfonate) (PEDOT:PSS) containing hydroxyl surface rich SiO 2 nanoparticles were investigated. Rearrangement and bonding of PEDOT:PSS were affected by the content of SiO 2 nanoparticles, which resulted in the modification of an electronic band structure and electrical characteristics. A slight decrease in work function and a shift of the highly occupied molecular orbital edge to the Fermi level were induced by SiO 2 nanoparticle addition. The current path was also tuned by SiO 2 nanoparticles and resistance of the composite film was diminished. SiO 2 nanoparticles affect electrostatic bonding between PEDOT:PSS and doping of PEDOT as well as increase the packing density of PEDOT:PSS.
Bibliographical noteFunding Information:
This study was supported by a grant (#10041220) from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Republic of Korea.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics