Optimization of effective absorption enhancement of paired-strips gold nanoantennas arrays in organic thin-films

Zih Ying Yang, Chen Wei Su, Kuo-Ping Chen*

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

This study sought to optimize the dimensional characteristics of paired-strips gold nanoantennas embedded in a P3HT: PCBM thin-film by taking into account the tradeoff between the size of the nanostructures and absorber layer as well as the gaps between nanoparticles, to maximize the effective absorption enhancement. The average enhancement behavior within the working region was discussed using integral analysis, which is important for overall enhancement. The discussion would focus on comparing the bands’ features of paired-strips nanoantennas embedded in a dielectric thin-film, and in air. By the average absorption 3D slices plots, in which the dimension width, height, and gap are changed with a fixed wavelength; the optimized dimension of paired-strips nanoantennas could be realized. Fixing the period (400 nm) of paired-strips nanoantennas embedded in P3HT:PCBM thin-films (120 nm in thickness) enhanced absorption by 9.8 times.

Original languageEnglish
Article number68
JournalApplied Physics A: Materials Science and Processing
Volume124
Issue number1
DOIs
StatePublished - 1 Jan 2018

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