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

被引：20

作者：

Cai, Qin Jia ^{[1
]}

Gan, Ye ^{[1
]}

Chan-Park, Mary B. ^{[1
]}

Yang, Hong Bin ^{[1
]}

Lu, Zhi Song ^{[1
]}

Song, Qun Liang ^{[1
]}

Li, Chang Ming ^{[1
]}

Dong, Zhi Li ^{[2
]}

机构：

[1] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637459, Singapore

[2] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 11期

关键词：

D O I：

10.1063/1.2987522

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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-TiO2 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 similar to 3x10(-8)A/cm(2) 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 cm(2) V(-1)s(-1), respectively, with on/off ratios of 10(3)-10(5). This material appears to be useful for applications in printable organic TFTs. (c) 2008 American Institute of Physics.

引用

页数：3

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