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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 6 — Mar. 24, 2014
  • pp: 6269–6275

FDTD simulation of transmittance characteristics of one-dimensional conducting electrodes

Kilbock Lee, Seok Ho Song, and Jinho Ahn  »View Author Affiliations


Optics Express, Vol. 22, Issue 6, pp. 6269-6275 (2014)
http://dx.doi.org/10.1364/OE.22.006269


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Abstract

We investigated transparent conducting electrodes consisting of periodic one-dimensional Ag or Al grids with widths from 25 nm to 5 μm via the finite-difference time-domain method. To retain high transmittance, two grid configurations with opening ratios of 90% and 95% were simulated. Polarization-dependent characteristics of the transmission spectra revealed that the overall transmittance of micron-scale grid electrodes may be estimated by the sum of light power passing through the uncovered area and the light power penetrating the covered metal layer. However, several dominant physical phenomena significantly affect the transmission spectra of the nanoscale grids: Rayleigh anomaly, transmission decay in TE polarized mode, and localized surface plasmon resonance. We conclude that, for applications of transparent electrodes, the critical feature sizes of conducting 1D grids should not be less than the wavelength scale in order to maintain uniform and predictable transmission spectra and low electrical resistivity.

© 2014 Optical Society of America

OCIS Codes
(160.2100) Materials : Electro-optical materials
(310.6628) Thin films : Subwavelength structures, nanostructures
(310.6805) Thin films : Theory and design
(310.7005) Thin films : Transparent conductive coatings

ToC Category:
Optoelectronics

History
Original Manuscript: December 16, 2013
Revised Manuscript: February 25, 2014
Manuscript Accepted: February 26, 2014
Published: March 10, 2014

Citation
Kilbock Lee, Seok Ho Song, and Jinho Ahn, "FDTD simulation of transmittance characteristics of one-dimensional conducting electrodes," Opt. Express 22, 6269-6275 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-6-6269


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