Alignment-induced epitaxial transition in organic-organic heteroepitaxy

Dong Guo, Kenji Sakamoto, Kazushi Miki, Susumu Ikeda, Koichiro Saiki

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

We report the epitaxial growth of thin films of a small organic molecule (pentacene) on polymer substrates with controllable photoalignment over a wide range. The pentacene molecular plane exhibited a distinct orientational change from parallel to perpendicular relative to the polymer chain with increasing substrate polymer alignment. Each orientation consists of twinlike domains. Such characteristics reveal a unique alignment-induced epitaxial transition controlled by the subtle balance of weak interactions, showing a promising approach for tuning the characteristics of organic semiconductor based electronic devices.

Original languageEnglish
Article number236103
JournalPhysical Review Letters
Volume101
Issue number23
DOIs
Publication statusPublished - 2008 Dec 4
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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