Directed self-assembly of organic semiconductors via confined evaporative capillary flows for use in organic field-effect transistors

Do Hwan Kim; Jung Ah Lim; Wonsuk Cha; Jung Heon Lee; Hyunjung Kim; Jeong Ho Cho

doi:10.1016/j.orgel.2014.06.022

Directed self-assembly of organic semiconductors via confined evaporative capillary flows for use in organic field-effect transistors

Do Hwan Kim, Jung Ah Lim, Wonsuk Cha, Jung Heon Lee, Hyunjung Kim, Jeong Ho Cho

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

We fabricated well-defined 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-PEN) crystal arrays for use in electronic applications via a simple but effective method, the confined evaporative capillary flow (CEC) method. This has been accomplished by systematically controlling the contact line pinning at the edge of glass stylus and the outward hydrodynamic flow within the drying droplet with various processing solvents and surface properties of the substrate during solidification. We found that after CEC coating of TIPS-PEN solution dissolved into toluene onto SiO₂ surface, ribbon-shaped TIPS-PEN crystals were well developed with a width of 20-100 μm and length of 300 μm - 2 mm, which is presumably owing to optimized capillary evaporation. Specifically, TIPS-PEN crystals present highly preferred crystal orientation along the (l 0 0) axis, which can lead to efficient charge transport in a lateral direction. Thus, TIPS-PEN field-effect transistors (FETs) exhibited a good hole mobility of 0.72 cm²/Vs.

Original language	English
Pages (from-to)	2322-2327
Number of pages	6
Journal	Organic Electronics
Volume	15
Issue number	10
DOIs	https://doi.org/10.1016/j.orgel.2014.06.022
Publication status	Published - 2014 Oct

Bibliographical note

Funding Information:
This work was supported by the Center for Advanced Soft-Electronics funded by the Ministry of Science, ICT and Future Planning as Global Frontier Project (2013M3A6A5073177, 2011-0031628), Dream Project (2V03380), Institutional Research Program of Korea Institute of Science and Technology (KIST), and Basic Science Research Program (NRF-2013R1A1A2011897) of the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science, and Technology, Korea.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Chemistry(all)
Biomaterials
Condensed Matter Physics
Electrical and Electronic Engineering
Materials Chemistry

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10.1016/j.orgel.2014.06.022

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title = "Directed self-assembly of organic semiconductors via confined evaporative capillary flows for use in organic field-effect transistors",

abstract = "We fabricated well-defined 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-PEN) crystal arrays for use in electronic applications via a simple but effective method, the confined evaporative capillary flow (CEC) method. This has been accomplished by systematically controlling the contact line pinning at the edge of glass stylus and the outward hydrodynamic flow within the drying droplet with various processing solvents and surface properties of the substrate during solidification. We found that after CEC coating of TIPS-PEN solution dissolved into toluene onto SiO2 surface, ribbon-shaped TIPS-PEN crystals were well developed with a width of 20-100 μm and length of 300 μm - 2 mm, which is presumably owing to optimized capillary evaporation. Specifically, TIPS-PEN crystals present highly preferred crystal orientation along the (l 0 0) axis, which can lead to efficient charge transport in a lateral direction. Thus, TIPS-PEN field-effect transistors (FETs) exhibited a good hole mobility of 0.72 cm2/Vs.",

author = "Kim, {Do Hwan} and Lim, {Jung Ah} and Wonsuk Cha and Lee, {Jung Heon} and Hyunjung Kim and Cho, {Jeong Ho}",

note = "Funding Information: This work was supported by the Center for Advanced Soft-Electronics funded by the Ministry of Science, ICT and Future Planning as Global Frontier Project (2013M3A6A5073177, 2011-0031628), Dream Project (2V03380), Institutional Research Program of Korea Institute of Science and Technology (KIST), and Basic Science Research Program (NRF-2013R1A1A2011897) of the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science, and Technology, Korea.",

year = "2014",

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doi = "10.1016/j.orgel.2014.06.022",

language = "English",

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AU - Kim, Do Hwan

AU - Lim, Jung Ah

AU - Cha, Wonsuk

AU - Lee, Jung Heon

AU - Kim, Hyunjung

AU - Cho, Jeong Ho

N1 - Funding Information: This work was supported by the Center for Advanced Soft-Electronics funded by the Ministry of Science, ICT and Future Planning as Global Frontier Project (2013M3A6A5073177, 2011-0031628), Dream Project (2V03380), Institutional Research Program of Korea Institute of Science and Technology (KIST), and Basic Science Research Program (NRF-2013R1A1A2011897) of the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science, and Technology, Korea.

PY - 2014/10

Y1 - 2014/10

N2 - We fabricated well-defined 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-PEN) crystal arrays for use in electronic applications via a simple but effective method, the confined evaporative capillary flow (CEC) method. This has been accomplished by systematically controlling the contact line pinning at the edge of glass stylus and the outward hydrodynamic flow within the drying droplet with various processing solvents and surface properties of the substrate during solidification. We found that after CEC coating of TIPS-PEN solution dissolved into toluene onto SiO2 surface, ribbon-shaped TIPS-PEN crystals were well developed with a width of 20-100 μm and length of 300 μm - 2 mm, which is presumably owing to optimized capillary evaporation. Specifically, TIPS-PEN crystals present highly preferred crystal orientation along the (l 0 0) axis, which can lead to efficient charge transport in a lateral direction. Thus, TIPS-PEN field-effect transistors (FETs) exhibited a good hole mobility of 0.72 cm2/Vs.

AB - We fabricated well-defined 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-PEN) crystal arrays for use in electronic applications via a simple but effective method, the confined evaporative capillary flow (CEC) method. This has been accomplished by systematically controlling the contact line pinning at the edge of glass stylus and the outward hydrodynamic flow within the drying droplet with various processing solvents and surface properties of the substrate during solidification. We found that after CEC coating of TIPS-PEN solution dissolved into toluene onto SiO2 surface, ribbon-shaped TIPS-PEN crystals were well developed with a width of 20-100 μm and length of 300 μm - 2 mm, which is presumably owing to optimized capillary evaporation. Specifically, TIPS-PEN crystals present highly preferred crystal orientation along the (l 0 0) axis, which can lead to efficient charge transport in a lateral direction. Thus, TIPS-PEN field-effect transistors (FETs) exhibited a good hole mobility of 0.72 cm2/Vs.

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Directed self-assembly of organic semiconductors via confined evaporative capillary flows for use in organic field-effect transistors

Abstract

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