Finite-difference time-domain algorithm for quantifying light absorption in silicon nanowires

Ho Seok Ee, Kyung Deok Song, Sun Kyung Kim, Hong Kyu Park

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We introduce an accurate and fast finite-difference time-domain (FDTD) method for calculating light absorption in nanoscale optical systems. The dispersive FDTD update equations were derived from auxiliary differential equations (ADE), wherein dispersive media were fitted by various dispersion models including the Drude, Debye, Lorentz, and critical point models. Light absorption in the dispersive media was quantified by calculating polarization pole currents in the ADE. To verify this simulation method, the absorption spectrum of a 300 nm thick silicon film was calculated and compared to an analytic solution. In addition, the absorption cross-section of a single silicon nanowire with a diameter of 300 nm was calculated using monochromatic and broadband light sources. We believe that this reformatted FDTD method is a powerful tool for the design of novel nanophotonic components, including nanowire photovoltaic devices.

Original languageEnglish
Pages (from-to)1027-1036
Number of pages10
JournalIsrael Journal of Chemistry
Volume52
Issue number11-12
DOIs
Publication statusPublished - 2012 Dec 1

Fingerprint

Finite difference time domain method
Silicon
Light absorption
Nanowires
Differential equations
Nanophotonics
Optical systems
Light sources
Absorption spectra
Poles
Polarization

Keywords

  • Absorption cross-section
  • Banowire
  • Finite-difference time-domain
  • Light absorption
  • Photovoltaic

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Finite-difference time-domain algorithm for quantifying light absorption in silicon nanowires. / Ee, Ho Seok; Song, Kyung Deok; Kim, Sun Kyung; Park, Hong Kyu.

In: Israel Journal of Chemistry, Vol. 52, No. 11-12, 01.12.2012, p. 1027-1036.

Research output: Contribution to journalArticle

Ee, Ho Seok ; Song, Kyung Deok ; Kim, Sun Kyung ; Park, Hong Kyu. / Finite-difference time-domain algorithm for quantifying light absorption in silicon nanowires. In: Israel Journal of Chemistry. 2012 ; Vol. 52, No. 11-12. pp. 1027-1036.
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