Alignment-Induced Epitaxial Transition in Organic-Organic Heteroepitaxy

被引：20

作者：

Guo, Dong ^{[1
]}

Sakamoto, Kenji ^{[1
]}

Miki, Kazushi ^{[1
]}

Ikeda, Susumu ^{[2
]}

Saiki, Koichiro ^{[2
]}

机构：

[1] Natl Inst Mat Sci, Organ Nanomat Ctr, Tsukuba, Ibaraki 3050044, Japan

[2] Univ Tokyo, Dept Complex Sci & Engn, Chiba 2778561, Japan

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.101.236103

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：4

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