Energy-level alignment at interfaces between gold and poly(3- hexylthiophene) films with two different molecular structures

Yeong Don Park, Jeong Ho Cho, Do Hwan Kim, Yunseok Jang, Hwa Sung Lee, Kyuwook Ihm, Tai Hee Kang, Kilwon Cho

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

The electronic structures of the interfaces between Au and poly(3-hexylthiophene) (P3HT) films with two different molecular orientations and orderings were investigated using synchrotron radiation photoemission spectroscopy. We found that, depending on whether thermal treatment was used, the P3HT thin film adopts two different molecular orientations, parallel and perpendicular to the silicon substrate, which result in different values of the vacuum level shift and hole-injection barrier. Thus, the molecular orientation and ordering of the P3HT material strongly affect the energy level alignment at the P3HT/Au interface.

Original languageEnglish
Pages (from-to)G317-G319
JournalElectrochemical and Solid-State Letters
Volume9
Issue number11
DOIs
Publication statusPublished - 2006 Sep 21

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

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