Random Au-Ag composite nanoparticles as broadband antireflection coating for Si surface

Lanying Yang*, Junxue FU, Mingzhe Liu, Huiqiang Tang

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review


Gold (Au) and silver (Ag) monometallic nanoparticles (MNPs) and Au-Ag composite nanoparticles (CNPs) were fabricated on silicon wafers by anneal de-wetting the corresponding thin films. The measured reflection spectra show that the Au-Ag CNPs demonstrate a 28% decrease in average reflection (Rav) over the 300-1200 nm range, compared to the bare silicon (Si) surfaces. CNPs also exhibit a better broadband antireflection than both Au and Ag MNPs, which is consistent with simulation results. This study opens a low-cost and easily fabricated pathway to achieve broadband antireflection coating on Si surface.

Original languageEnglish
Pages (from-to)3781-3786
Number of pages6
JournalJournal of Computational and Theoretical Nanoscience
Issue number10
Publication statusPublished - Oct 2015

Scopus Subject Areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Computational Mathematics
  • Electrical and Electronic Engineering

User-Defined Keywords

  • Broadband Antireflection
  • De-Wetting
  • Random Nanoparticles


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