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

doi:10.1063/1.4807461

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 journal › Article › peer-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 language	English
Article number	193307
Journal	Applied Physics Letters
Volume	102
Issue number	19
DOIs	https://doi.org/10.1063/1.4807461
State	Published - 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.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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

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.",

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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.",

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AU - Kim, Min Hoi

AU - Park, Hea Lim

AU - Payne, Marcia M.

AU - Anthony, John E.

AU - Lee, Sin Doo

N1 - 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.

PY - 2013/5/13

Y1 - 2013/5/13

N2 - 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.

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

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