Effect of surface type on structural and optical properties of Ag nanoparticles formed by dewetting

Tanyeli I., Nasser H., ES F., BEK A., TURAN R.

OPTICS EXPRESS, vol.21, no.18, 2013 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 21 Issue: 18
  • Publication Date: 2013
  • Doi Number: 10.1364/oe.21.00a798
  • Journal Name: OPTICS EXPRESS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Middle East Technical University Affiliated: Yes


Integration of an array of Ag nanoparticles in solar cells is expected to increase light trapping through field enhancement and plasmonic scattering. Requirement of Ag nanoparticle decoration of cell surfaces or interfaces at the macro-scale, calls for a self-organized fabrication method such as thermal dewetting. Optical properties of a 2D array of Ag nanoparticles are known to be very sensitive to their shape and size. We show that these parameters depend on the type of the substrate used. We observe that the average nanoparticle size decreases with increasing substrate thermal conductivity and nanoparticle size distribution broadens with increasing surface roughness. (C) 2013 Optical Society of America