Extinction Cross-Section Modeling of Metallic Nanoparticles

  • Firas Faeq. K. Hussain Physics Department, College of Science, Al-Muthanna University, Samawa, Iraq
  • Riyadh Mansoor Engineering College, Al-Muthanna University, Samawa, Iraq
  • Rasha A. Hussein Engineering College, Al-Muthanna University, Samawa, Iraq
Keywords: Surface plasmons, metallic nanoparticles, extinction cross-section

Abstract

Localized surface plasmons (LSPs) are a potentially valuable property for the practical use of small size metallic particles. Exploiting the LSPs in metallic nanoparticle (NP)-based solar cells was shown to increase the efficiency of solar panels. A large extinction cross section of NPs allows for high scattering of light at the surface of the panel, which reduces the panel thickness, allowing for small size and low-cost solar cells. In this paper, the extinction cross-section of spherical nanoparticles is studied and simulated numerically. Surface plasmons were first modeled using the Drude’s model then the scattering and absorption cross-sections were derived. Commercial3D simulation software was used to model the near field distribution of the three NP structures. A spherical nanoparticle made of silver was modeled first and the field distribution inside the sphere was presented. The extinction cross-section was also calculated. Two other structures were also presented; a silica NP was first coated with silver shell then a silver NP was coated with silica shell. These structures were studied to estimate the effects of the surroundings on the extinction cross-section. The results show that the silica NP coated with a silver shell provides a high extinction cross-section and can be considered as a good choice for the LSPs-based solar cells.

Published
2020-11-28
How to Cite
Hussain, F. F. K., Mansoor, R., & Hussein, R. A. (2020). Extinction Cross-Section Modeling of Metallic Nanoparticles. Iraqi Journal of Science, 61(11), 2903-2912. https://doi.org/10.24996/ijs.2020.61.11.14
Section
Physics