Role of the spacer layer in plasmonic antireflection coatings comprised of gold or silver nanoparticles

Tristan L. Temple*, Svetlana Dligatch

*Corresponding author for this work

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Metal nanoparticles (NPs) can increase the absorption of light within semiconductors and hence improve the efficiency of solar cells.We experimentally investigate the effect that gold and silver NPs have on the reflectance of silicon wafers. The NPs are fabricated using the low cost, large area technique of thermal dewetting. We show that a dielectric spacer layer between the NPs and the semiconductor is required to achieve a net reduction of reflection. Furthermore, the optimum thickness of the spacer layer is found to be independent of NP size and metal type.

Original languageEnglish
Article number053095
Pages (from-to)053095-1-053095-9
Number of pages9
JournalJournal of Photonics for Energy
Volume5
Issue number1
DOIs
Publication statusPublished - 12 Mar 2015

Keywords

  • antireflection
  • metal nanoparticles
  • photovoltaics
  • plasmonics
  • solar cells

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