Lithium perchlorate-doped poly(styrene-b-ethylene oxide-b-styrene) lamellae-forming triblock copolymer as high capacitance, smooth, thin film dielectric

Jihua Chen; C. Daniel Frisbie; Frank B. Bates

doi:10.1021/jp807985g

Lithium perchlorate-doped poly(styrene-b-ethylene oxide-b-styrene) lamellae-forming triblock copolymer as high capacitance, smooth, thin film dielectric

Jihua Chen, C. Daniel Frisbie, Frank B. Bates

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

23 Scopus citations

Abstract

A symmetric poly(styrene-b-ethylene oxide-b-styrene) (SOS) triblock copolymer with block molecular weights (M_n) of 7k-14k-7k was synthesized by anionic polymerization. Various amounts of lithium perchlorate salt ([O/Li] ) 3, 6, 12, 24, and 48) were incorporated into the SOS block copolymer to achieve an elevated charge carrier density, which also led to lamellae formation and reduced crystallinity of the poly(ethylene oxide) block according to small-angle X-ray scattering and differential scanning calorimetry. Spin-coated SOS/LiClO₄ capacitors of 30 nm thickness exhibit very high capacitances (up to 4.5 μF/cm² at 10 Hz and 1.5 μF/cm ² at 1000 Hz with an amplitude of 0.1 V) and rather smooth surfaces (root-mean-square roughness of 0.5-2 nm). We expect to optimize these thin-film capacitors for high-performance organic thin film transistor applications.

Original language	English
Pages (from-to)	3903-3908
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	113
Issue number	10
DOIs	https://doi.org/10.1021/jp807985g
State	Published - Mar 12 2009
Externally published	Yes

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title = "Lithium perchlorate-doped poly(styrene-b-ethylene oxide-b-styrene) lamellae-forming triblock copolymer as high capacitance, smooth, thin film dielectric",

abstract = "A symmetric poly(styrene-b-ethylene oxide-b-styrene) (SOS) triblock copolymer with block molecular weights (Mn) of 7k-14k-7k was synthesized by anionic polymerization. Various amounts of lithium perchlorate salt ([O/Li] ) 3, 6, 12, 24, and 48) were incorporated into the SOS block copolymer to achieve an elevated charge carrier density, which also led to lamellae formation and reduced crystallinity of the poly(ethylene oxide) block according to small-angle X-ray scattering and differential scanning calorimetry. Spin-coated SOS/LiClO4 capacitors of 30 nm thickness exhibit very high capacitances (up to 4.5 μF/cm2 at 10 Hz and 1.5 μF/cm 2 at 1000 Hz with an amplitude of 0.1 V) and rather smooth surfaces (root-mean-square roughness of 0.5-2 nm). We expect to optimize these thin-film capacitors for high-performance organic thin film transistor applications.",

author = "Jihua Chen and Frisbie, {C. Daniel} and Bates, {Frank B.}",

year = "2009",

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T1 - Lithium perchlorate-doped poly(styrene-b-ethylene oxide-b-styrene) lamellae-forming triblock copolymer as high capacitance, smooth, thin film dielectric

AU - Chen, Jihua

AU - Frisbie, C. Daniel

AU - Bates, Frank B.

PY - 2009/3/12

Y1 - 2009/3/12

N2 - A symmetric poly(styrene-b-ethylene oxide-b-styrene) (SOS) triblock copolymer with block molecular weights (Mn) of 7k-14k-7k was synthesized by anionic polymerization. Various amounts of lithium perchlorate salt ([O/Li] ) 3, 6, 12, 24, and 48) were incorporated into the SOS block copolymer to achieve an elevated charge carrier density, which also led to lamellae formation and reduced crystallinity of the poly(ethylene oxide) block according to small-angle X-ray scattering and differential scanning calorimetry. Spin-coated SOS/LiClO4 capacitors of 30 nm thickness exhibit very high capacitances (up to 4.5 μF/cm2 at 10 Hz and 1.5 μF/cm 2 at 1000 Hz with an amplitude of 0.1 V) and rather smooth surfaces (root-mean-square roughness of 0.5-2 nm). We expect to optimize these thin-film capacitors for high-performance organic thin film transistor applications.

AB - A symmetric poly(styrene-b-ethylene oxide-b-styrene) (SOS) triblock copolymer with block molecular weights (Mn) of 7k-14k-7k was synthesized by anionic polymerization. Various amounts of lithium perchlorate salt ([O/Li] ) 3, 6, 12, 24, and 48) were incorporated into the SOS block copolymer to achieve an elevated charge carrier density, which also led to lamellae formation and reduced crystallinity of the poly(ethylene oxide) block according to small-angle X-ray scattering and differential scanning calorimetry. Spin-coated SOS/LiClO4 capacitors of 30 nm thickness exhibit very high capacitances (up to 4.5 μF/cm2 at 10 Hz and 1.5 μF/cm 2 at 1000 Hz with an amplitude of 0.1 V) and rather smooth surfaces (root-mean-square roughness of 0.5-2 nm). We expect to optimize these thin-film capacitors for high-performance organic thin film transistor applications.

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Lithium perchlorate-doped poly(styrene-b-ethylene oxide-b-styrene) lamellae-forming triblock copolymer as high capacitance, smooth, thin film dielectric

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