Highly Stretchable, High-Mobility, Free-Standing All-Organic Transistors Modulated by Solid-State Elastomer Electrolytes

Do Hyung Park, Han Wool Park, Jong Won Chung, Kyungah Nam, Shinyoung Choi, Yoon Sun Chung, Haejung Hwang, Bong Soo Kim, Do Hwan Kim

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

Highly stretchable, high-mobility, and free-standing coplanar-type all-organic transistors based on deformable solid-state elastomer electrolytes are demonstrated using ionic thermoplastic polyurethane (i-TPU), thereby showing high reliability under mechanical stimuli as well as low-voltage operation. Unlike conventional ionic dielectrics, the i-TPU electrolyte prepared herein has remarkable characteristics, i.e., a large specific capacitance of 5.5 µF cm −2 , despite the low weight ratio (20 wt%) of the ionic liquid, high transparency, and even stretchability. These i-TPU-based organic transistors exhibit a mobility as high as 7.9 cm 2 V −1 s −1 , high bendability (R c , radius of curvature: 7.2 mm), and good stretchability (60% tensile strain). Moreover, they are suitable for low-voltage operation (V DS = −1.0 V, V GS = −2.5 V). In addition, the electrical characteristics such as mobility, on-current, and threshold voltage are maintained even in the concave and convex bending state (bending tensile strain of ≈3.4%), respectively. Finally, free-standing, fully stretchable, and semi-transparent coplanar-type all-organic transistors can be fabricated by introducing a poly(3,4-ethylenedioxythiophene):polystyrene sulfonic acid layer as source/drain and gate electrodes, thus achieving low-voltage operation (V DS = −1.5 V, V GS = −2.5 V) and an even higher mobility of up to 17.8 cm 2 V −1 s −1 . Moreover, these devices withstand stretching up to 80% tensile strain.

Original languageEnglish
Article number1808909
JournalAdvanced Functional Materials
Volume29
Issue number18
DOIs
StatePublished - 2019 May 2

Fingerprint

Elastomers
Polyurethanes
Tensile strain
elastomers
Thermoplastics
Electrolytes
Transistors
transistors
electrolytes
low voltage
solid state
Electric potential
Ionic Liquids
Formability
Threshold voltage
Ionic liquids
low weight
Transparency
Stretching
sulfonic acid

Keywords

  • elastomer electrolyte
  • free-standing all-organic transistors
  • high-mobility
  • low-voltage operation
  • stretchable and conformal electronics

Cite this

Park, Do Hyung ; Park, Han Wool ; Chung, Jong Won ; Nam, Kyungah ; Choi, Shinyoung ; Chung, Yoon Sun ; Hwang, Haejung ; Kim, Bong Soo ; Kim, Do Hwan. / Highly Stretchable, High-Mobility, Free-Standing All-Organic Transistors Modulated by Solid-State Elastomer Electrolytes. In: Advanced Functional Materials. 2019 ; Vol. 29, No. 18.
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title = "Highly Stretchable, High-Mobility, Free-Standing All-Organic Transistors Modulated by Solid-State Elastomer Electrolytes",
abstract = "Highly stretchable, high-mobility, and free-standing coplanar-type all-organic transistors based on deformable solid-state elastomer electrolytes are demonstrated using ionic thermoplastic polyurethane (i-TPU), thereby showing high reliability under mechanical stimuli as well as low-voltage operation. Unlike conventional ionic dielectrics, the i-TPU electrolyte prepared herein has remarkable characteristics, i.e., a large specific capacitance of 5.5 µF cm −2 , despite the low weight ratio (20 wt{\%}) of the ionic liquid, high transparency, and even stretchability. These i-TPU-based organic transistors exhibit a mobility as high as 7.9 cm 2 V −1 s −1 , high bendability (R c , radius of curvature: 7.2 mm), and good stretchability (60{\%} tensile strain). Moreover, they are suitable for low-voltage operation (V DS = −1.0 V, V GS = −2.5 V). In addition, the electrical characteristics such as mobility, on-current, and threshold voltage are maintained even in the concave and convex bending state (bending tensile strain of ≈3.4{\%}), respectively. Finally, free-standing, fully stretchable, and semi-transparent coplanar-type all-organic transistors can be fabricated by introducing a poly(3,4-ethylenedioxythiophene):polystyrene sulfonic acid layer as source/drain and gate electrodes, thus achieving low-voltage operation (V DS = −1.5 V, V GS = −2.5 V) and an even higher mobility of up to 17.8 cm 2 V −1 s −1 . Moreover, these devices withstand stretching up to 80{\%} tensile strain.",
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Highly Stretchable, High-Mobility, Free-Standing All-Organic Transistors Modulated by Solid-State Elastomer Electrolytes. / Park, Do Hyung; Park, Han Wool; Chung, Jong Won; Nam, Kyungah; Choi, Shinyoung; Chung, Yoon Sun; Hwang, Haejung; Kim, Bong Soo; Kim, Do Hwan.

In: Advanced Functional Materials, Vol. 29, No. 18, 1808909, 02.05.2019.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Highly Stretchable, High-Mobility, Free-Standing All-Organic Transistors Modulated by Solid-State Elastomer Electrolytes

AU - Park, Do Hyung

AU - Park, Han Wool

AU - Chung, Jong Won

AU - Nam, Kyungah

AU - Choi, Shinyoung

AU - Chung, Yoon Sun

AU - Hwang, Haejung

AU - Kim, Bong Soo

AU - Kim, Do Hwan

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Y1 - 2019/5/2

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AB - Highly stretchable, high-mobility, and free-standing coplanar-type all-organic transistors based on deformable solid-state elastomer electrolytes are demonstrated using ionic thermoplastic polyurethane (i-TPU), thereby showing high reliability under mechanical stimuli as well as low-voltage operation. Unlike conventional ionic dielectrics, the i-TPU electrolyte prepared herein has remarkable characteristics, i.e., a large specific capacitance of 5.5 µF cm −2 , despite the low weight ratio (20 wt%) of the ionic liquid, high transparency, and even stretchability. These i-TPU-based organic transistors exhibit a mobility as high as 7.9 cm 2 V −1 s −1 , high bendability (R c , radius of curvature: 7.2 mm), and good stretchability (60% tensile strain). Moreover, they are suitable for low-voltage operation (V DS = −1.0 V, V GS = −2.5 V). In addition, the electrical characteristics such as mobility, on-current, and threshold voltage are maintained even in the concave and convex bending state (bending tensile strain of ≈3.4%), respectively. Finally, free-standing, fully stretchable, and semi-transparent coplanar-type all-organic transistors can be fabricated by introducing a poly(3,4-ethylenedioxythiophene):polystyrene sulfonic acid layer as source/drain and gate electrodes, thus achieving low-voltage operation (V DS = −1.5 V, V GS = −2.5 V) and an even higher mobility of up to 17.8 cm 2 V −1 s −1 . Moreover, these devices withstand stretching up to 80% tensile strain.

KW - elastomer electrolyte

KW - free-standing all-organic transistors

KW - high-mobility

KW - low-voltage operation

KW - stretchable and conformal electronics

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