Microchannel Wetting for Controllable Patterning and Alignment of Silver Nanowire with High Resolution

  • Bo-Ru Yang
    School of Microelectronics, School of Physics and Engineering, Guangdong Province Key Laboratory of Display Material and Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, People’s Republic of China
  • Wu Cao
    School of Microelectronics, School of Physics and Engineering, Guangdong Province Key Laboratory of Display Material and Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, People’s Republic of China
  • Gui-Shi Liu
    School of Microelectronics, School of Physics and Engineering, Guangdong Province Key Laboratory of Display Material and Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, People’s Republic of China
  • Hui-Jiuan Chen
    SYSU-CMU Shunde International Joint Research Institute, Shunde 528000, People’s Republic of China
  • Yong-Young Noh
    Department of Energy and Materials Engineering, Dongguk University, 26 Pil-dong, 3 ga, Jung-gu, Seoul 100-715, Republic of Korea
  • Takeo Minari
    International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan
  • Hsiang-Chih Hsiao
    Shenzhen China Star Optoelectronics Technology Co., Ltd., Guangming New District No. 9-2, Tangming Road, Shenzhen 518132, People’s Republic of China
  • Chia-Yu Lee
    Shenzhen China Star Optoelectronics Technology Co., Ltd., Guangming New District No. 9-2, Tangming Road, Shenzhen 518132, People’s Republic of China
  • Han-Ping D. Shieh
    Department of Photonics/Display Institute, National Chiao Tung University, Hsinchu 300, Taiwan
  • Chuan Liu
    School of Microelectronics, School of Physics and Engineering, Guangdong Province Key Laboratory of Display Material and Technology, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, People’s Republic of China

書誌事項

公開日
2015-09-15
資源種別
journal article
DOI
  • 10.1021/acsami.5b06370
公開者
American Chemical Society (ACS)

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説明

Patterning and alignment of conductive nanowires are essential for good electrical isolation and high conductivity in various applications. Herein a facile bottom-up, additive technique is developed to pattern and align silver nanowires (AgNWs) by manipulating wetting of dispersions in microchannels. By forming hydrophobic/hydrophilic micropatterns down to 8 μm with fluoropolymer (Cytop) and SiO2, the aqueous AgNW dispersions with the optimized surface tension and viscosity self-assemble into microdroplets and then dry to form anisotropic AgNW networks. The alignment degree characterized by the full width at half-maximum (FWHM) can be well-controlled from 39.8° to 84.1° by changing the width of microchannels. A mechanism is proposed and validated by statistical analysis on AgNW alignment, and a static model is proposed to guide the patterning of general NWs. The alignment reduced well the electrical resistivity of AgNW networks by a factor of 5 because of the formation of efficient percolation path for carrier conduction.

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