Effective absorption enhancement in dielectric thin-films with embedded paired-strips gold nanoantennas

Zih Ying Yang, Kuo-Ping Chen

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

This study focuses on determining the optimized thickness of an absorbing thin-film with embedded gold nanoantennas, for absorption enhancement. Gold paired-strips nanoantennas with small gaps have been proposed for light trapping because of the high localized electric field in the gap due to resonance. Paired-strips nanoantennas with small gaps produce higher effective absorption compared to single-strip gratings. From the average absorption two-dimensional map, the absorption enhancement may increase by a factor of up to 20 for gold paired-strips nanoantennas embedded in a 100 nm thick P3HT:PCBM thin-film.

Original languageEnglish
Pages (from-to)12737-12749
Number of pages13
JournalOptics Express
Volume22
Issue number11
DOIs
StatePublished - Jan 2014

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