Selective Wavelength Plasmonic Flash Light Welding of Silver Nanowires for Transparent Electrodes with High Conductivity

Yong Rae Jang, Wan Ho Chung, Yeon Taek Hwang, Hyun Jun Hwang, Sang Ho Kim, Hak Sung Kim

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

Abstract

In this work, silver nanowires (AgNWs) printed on a polyethylene terephthalate substrate using a bar coater were welded via selective wavelength plasmonic flash light irradiation. To achieve high electrical conductivity and transparent characteristics, the wavelength of the flash white light was selectively chosen and irradiated by using high-pass, low-pass, and band-pass filters. The flash white light irradiation conditions such as on-time, off-time, and number of pulses were also optimized. The wavelength range (400-500 nm) corresponding to the plasmonic wavelength of the AgNW could efficiently weld the AgNW films and enhance its conductivity. To carry out in-depth study of the welding phenomena with respect to wavelength, a multiphysics COMSOL simulation was conducted. The welded AgNW films under selective plasmonic flash light welding conditions showed the lowest sheet resistance (51.275 ω/sq) and noteworthy transmittance (95.3%). Finally, the AgNW film, which was welded by selective wavelength plasmonic flash light with optical filters, was successfully used to make a large area transparent heat film and dye-sensitized solar cells showing superior performances.

Original languageEnglish
Pages (from-to)24099-24107
Number of pages9
JournalACS Applied Materials and Interfaces
Volume10
Issue number28
DOIs
StatePublished - Jul 18 2018
Externally publishedYes

Keywords

  • band-pass filter
  • flash light welding
  • intensive plasmonic
  • optical filter
  • printed electronics
  • silver nanowire
  • wavelength range

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