Effect of silica nanoparticle content on the structure and electrostatic bonding of PEDOT:PSS

Seok Joo Wang, Yong June Choi, Su Cheol Gong, Yong Hoon Kim, Hyung Ho Park

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)179-185
Number of pages7
JournalMolecular Crystals and Liquid Crystals
Issue number1
Publication statusPublished - 2012 Dec 3

Bibliographical note

Funding 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

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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