Polymorphic transformation induced by nanoimprinted technology in pentacene-film early-stage growth

Ming Hua Chang, Wei Yang Chou, Yung Chun Lee, Horng Long Cheng, Hao Yuan Chung, Chung Chih Chang, Cheng Yu Chiu, Tsung Yeh Ho

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Abstract

Polymorphism control of organic semiconductor films greatly affects optoelectronic device performance. The thin-film phase is always the dominant phase in the early growth of pentacene films; however, the performance of the bulk phase is superior to that of the thin-film phase. In the present study, a nanoimprinted polyimide layer is used to induce the growth of the bulk phase in the early stage. The bulk phase appears in the initial few layers and its dominance of the polymorphisms in the pentacene film increases with increasing thickness. The mechanism of the phase transformation is explained.

Original languageEnglish
Article number183301
JournalApplied Physics Letters
Volume97
Issue number18
DOIs
Publication statusPublished - 2010 Nov 1

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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