Topography-guided spreading and drying of 6,13- bis(triisopropylsilylethynyl)-pentacene solution on a polymer insulator for the field-effect mobility enhancement

Chang Min Keum, Jin Hyuk Bae, Min Hoi Kim, Hea Lim Park, Marcia M. Payne, John E. Anthony, Sin Doo Lee

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

We report on the enhancement of the field-effect mobility of solution-processed 6,13-bis(triisopropylsilylethynyl)-pentacene (TIPS-pentacene) by unidirectional topography (UT) of an inkjet-printed polymer insulator. The UT leads to anisotropic spreading and drying of the TIPS-pentacene droplet and enables to spontaneously develop the ordered structures during the solvent evaporation. The mobility of the UT-dictated TIPS-pentacene film (0.202 ± 0.012 cm2/Vs) is found to increase by more than a factor of two compared to that of the isotropic case (0.090 ± 0.032 cm2/Vs). The structural arrangement of the TIPS-pentacene molecules in relation to the mobility enhancement is described within an anisotropic wetting formalism. Our UT-based approach to the mobility enhancement is easily applicable to different classes of soluble organic field-effect transistors by adjusting the geometrical parameters such as the height, the width, and the periodicity of the UT of an inkjet-printed insulator.

Original languageEnglish
Article number193307
JournalApplied Physics Letters
Volume102
Issue number19
DOIs
StatePublished - May 13 2013

Bibliographical note

Funding Information:
This work was supported in part by the National Research Foundation of Korea under the Ministry of Education, Science and Technology of Korea through the Grant No. 2011-0028422. One of the authors (J.E.A.) acknowledges the support from the US Office of Naval Research.

Funding

This work was supported in part by the National Research Foundation of Korea under the Ministry of Education, Science and Technology of Korea through the Grant No. 2011-0028422. One of the authors (J.E.A.) acknowledges the support from the US Office of Naval Research.

FundersFunder number
Office of Naval Research
National Research Foundation of Korea
Ministry of Education, Culture, Sports, Science and Technology2011-0028422

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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