Solution-processable organic-capped titanium oxide nanoparticle dielectrics for organic thin-film transistors

Qin Jia Cai; Ye Gan; Mary B. Chan-Park; Hong Bin Yang; Zhi Song Lu; Qun Liang Song; Chang Ming Li; Zhi Li Dong

doi:10.1063/1.2987522

Solution-processable organic-capped titanium oxide nanoparticle dielectrics for organic thin-film transistors

Qin Jia Cai, Ye Gan, Mary B. Chan-Park, Hong Bin Yang, Zhi Song Lu, Qun Liang Song, Chang Ming Li, Zhi Li Dong

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

21 Citations (Scopus)

Abstract

Oleic acid-capped titanium dioxide (OA- TiO₂) nanoparticles were solution-processed to form homogeneous dielectrics for organic thin-film transistors (TFTs) of top-gate and bottom-gate configurations. The OA- TiO ₂ nanoparticles were well-dispersed into the organic solvent and spin-coated to give homogeneous films. These nanoparticle films showed a dielectric constant of about 5.3 and low leakage current density of ∼3× 10^-8 A/cm² under an electric field of 1 MV/cm. Poly(3, 3''' -didodecylquaterthiophene) and pentacene TFTs with OA- TiO₂ dielectrics exhibited mobilities of 0.05±0.02 and 0.2±0.05 cm²V^-1s^-1, respectively, with on/off ratios of 10³-10⁵. This material appears to be useful for applications in printable organic TFTs.

Original language	English
Article number	113304
Journal	Applied Physics Letters
Volume	93
Issue number	11
DOIs	https://doi.org/10.1063/1.2987522
Publication status	Published - 2008
Externally published	Yes

ASJC Scopus Subject Areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2987522

Cite this

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title = "Solution-processable organic-capped titanium oxide nanoparticle dielectrics for organic thin-film transistors",

abstract = "Oleic acid-capped titanium dioxide (OA- TiO2) nanoparticles were solution-processed to form homogeneous dielectrics for organic thin-film transistors (TFTs) of top-gate and bottom-gate configurations. The OA- TiO 2 nanoparticles were well-dispersed into the organic solvent and spin-coated to give homogeneous films. These nanoparticle films showed a dielectric constant of about 5.3 and low leakage current density of ∼3× 10-8 A/cm2 under an electric field of 1 MV/cm. Poly(3, 3''' -didodecylquaterthiophene) and pentacene TFTs with OA- TiO2 dielectrics exhibited mobilities of 0.05±0.02 and 0.2±0.05 cm2V-1s-1, respectively, with on/off ratios of 103-105. This material appears to be useful for applications in printable organic TFTs.",

author = "Cai, {Qin Jia} and Ye Gan and Chan-Park, {Mary B.} and Yang, {Hong Bin} and Lu, {Zhi Song} and Song, {Qun Liang} and Li, {Chang Ming} and {Li Dong}, Zhi",

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T1 - Solution-processable organic-capped titanium oxide nanoparticle dielectrics for organic thin-film transistors

AU - Cai, Qin Jia

AU - Gan, Ye

AU - Chan-Park, Mary B.

AU - Yang, Hong Bin

AU - Lu, Zhi Song

AU - Song, Qun Liang

AU - Li, Chang Ming

AU - Li Dong, Zhi

PY - 2008

Y1 - 2008

N2 - Oleic acid-capped titanium dioxide (OA- TiO2) nanoparticles were solution-processed to form homogeneous dielectrics for organic thin-film transistors (TFTs) of top-gate and bottom-gate configurations. The OA- TiO 2 nanoparticles were well-dispersed into the organic solvent and spin-coated to give homogeneous films. These nanoparticle films showed a dielectric constant of about 5.3 and low leakage current density of ∼3× 10-8 A/cm2 under an electric field of 1 MV/cm. Poly(3, 3''' -didodecylquaterthiophene) and pentacene TFTs with OA- TiO2 dielectrics exhibited mobilities of 0.05±0.02 and 0.2±0.05 cm2V-1s-1, respectively, with on/off ratios of 103-105. This material appears to be useful for applications in printable organic TFTs.

AB - Oleic acid-capped titanium dioxide (OA- TiO2) nanoparticles were solution-processed to form homogeneous dielectrics for organic thin-film transistors (TFTs) of top-gate and bottom-gate configurations. The OA- TiO 2 nanoparticles were well-dispersed into the organic solvent and spin-coated to give homogeneous films. These nanoparticle films showed a dielectric constant of about 5.3 and low leakage current density of ∼3× 10-8 A/cm2 under an electric field of 1 MV/cm. Poly(3, 3''' -didodecylquaterthiophene) and pentacene TFTs with OA- TiO2 dielectrics exhibited mobilities of 0.05±0.02 and 0.2±0.05 cm2V-1s-1, respectively, with on/off ratios of 103-105. This material appears to be useful for applications in printable organic TFTs.

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Solution-processable organic-capped titanium oxide nanoparticle dielectrics for organic thin-film transistors

Abstract

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