Optoelectrical Properties of Transparent Conductive Films Fabricated with Ag Nanoparticle-Suspended Emulsion under Various Formulations and Coating Conditions

Seong Hwan Kim, Geunyeop Park, Kyu Byung Kim, Yong Woo Shin, Hyun Wook Jung

Research output: Contribution to journalArticlepeer-review

Abstract

Transparent conductive films (TCFs) were fabricated through bar-coating with a water-in-toluene emulsion containing Ag nanoparticles (AgNPs). Morphological changes in the self-assembled TCF networks under different emulsion formulations and coating conditions and the corresponding optoelectrical properties were investigated. In preparing various emulsions, the concentration of AgNPs and the water weight fraction were important factors for determining the size of the water droplets, which plays a decisive role in controlling the optoelectrical properties of the TCFs affected by open cells and conductive lines. An increased concentration of AgNPs and decreased water weight fraction resulted in a decreased droplet size, thus altering the optoelectrical properties. The coating conditions, such as coating thickness and drying temperature, changed the degree of water droplet coalescence due to different emulsion drying rates, which also affected the final self-assembled network structure and optoelectrical properties of the TCFs. Systematically controlling various material and process conditions, we explored a coating strategy to enhance the optoelectrical properties of TCFs, resulting in an achieved transmittance of 86 ± 0.2%, a haze of 4 ± 0.2%, and a sheet resistance of 35 ± 2.8 Ω/□. TCFs with such optimal properties can be applied to touch screen fields.

Original languageEnglish
Article number1191
JournalNanomaterials
Volume13
Issue number7
DOIs
Publication statusPublished - 2023 Apr

Bibliographical note

Funding Information:
This research was supported by the Ministry of Trade, Industry, and Energy (MOTIE, Korea) under the Industrial Technology Innovation Program (Grant No. 20004044).

Publisher Copyright:
© 2023 by the authors.

Keywords

  • Ag nanoparticles
  • droplet size
  • emulsion coating
  • optoelectrical properties
  • self-assembled network
  • transparent conductive films

ASJC Scopus subject areas

  • General Chemical Engineering
  • General Materials Science

Fingerprint

Dive into the research topics of 'Optoelectrical Properties of Transparent Conductive Films Fabricated with Ag Nanoparticle-Suspended Emulsion under Various Formulations and Coating Conditions'. Together they form a unique fingerprint.

Cite this