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 language | English |
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Article number | 236103 |
Journal | Physical review letters |
Volume | 101 |
Issue number | 23 |
DOIs | |
Publication status | Published - 2008 Dec 4 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)