npj Flexible Electronics (Mar 2019)

Room-temperature production of silver-nanofiber film for large-area, transparent and flexible surface electromagnetic interference shielding

  • Sen Lin,
  • Haiyang Wang,
  • Fan Wu,
  • Qingmin Wang,
  • Xiaopeng Bai,
  • Di Zu,
  • Jianan Song,
  • Dong Wang,
  • Zhenglian Liu,
  • Ziwei Li,
  • Nian Tao,
  • Kai Huang,
  • Ming Lei,
  • Bo Li,
  • Hui Wu

DOI
https://doi.org/10.1038/s41528-019-0050-8
Journal volume & issue
Vol. 3, no. 1
pp. 1 – 8

Abstract

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Abstract A kind of pollution known as electromagnetic interference (EMI), which results from ubiquitous usage of various electronic communication and military radar equipment, has been receiving increasing attention recently. However, large-area EMI shielding on transparent and/or curved surfaces, including building windows, curved glass wall, and special requirements spaces (SRSs), remains hard to achieve. In this paper, a silver nanofiber (AgNF) based flexible and transparent EMI shielding film was successfully assembled via a room-temperature roll-to-roll production method. For transparent application scenario, AgNF with 89% transmittance in visible range and 1 μm thickness shows ~20 dB shielding efficiency (EMI SE). On the other hand, total shielding (>50 dB) is obtained when the thickness of AgNF increases to 10 μm, while its transmittance in visible range remains higher than 75%. Considering the facile and scale-free production technology, this material can be readily applied in large-scale, transparent, and/or SRSs EMI shielding.