Thin Films of Highly Planar Semiconductor Polymers Exhibiting Band-like Transport at Room Temperature

Jiyoul Lee, Jong Won Chung, Do Hwan Kim, Bang Lin Lee, Jeong Il Park, Sangyoon Lee, Roger Häusermann, Bertram Batlogg, Sang Soo Lee, Insil Choi, Il Won Kim, Moon Sung Kang

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

We report the observation of band-like transport from printed polymer thin films at room temperature. This was achieved from donor-acceptor type thiophene-thiazole copolymer that was carefully designed to enhance the planarity of the backbone and the resulting transfer integral between the macromolecules. Due to the strong molecular interaction, the printed polymer film exhibited extremely low trap density comparable to that of molecular single crystals. Moreover, the energy barrier height for charge transport could be readily reduced with the aid of electric field, which led formation of extended electron states for band-like charge transport at room temperature.

Original languageEnglish
Pages (from-to)7990-7993
Number of pages4
JournalJournal of the American Chemical Society
Volume137
Issue number25
DOIs
Publication statusPublished - 2015 Jul 1

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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