Abstract

Panuwat Chaiyachate¹ and Thananchai Dasri^2,3

DOI : http://dx.doi.org/10.13005/ojc/330228

This article presents the optical properties of pure silver (Ag) nanoparticle embedded in perovskite layer of perovskite solar cells using the discrete dipole approximation method (DDA). The influences of the Ag nanosphere size,shapes, and direction of the polarization direction of incident light respect to the particle axis on the absorption and scattering efficiencieson the localizedsurface plasmon resonance (LSPR) were investigated. For the single Ag nanoparticle, the calculated absorption and scattering spectra with increasing Ag diameter from 10 to 40 nm, both absorption and scattering resonance peaks were found at the position of around 624 nm. However, the optical efficiencies increases furtherwith increasing the particle size up to 40 nm. For the optical properties of the two Ag nanoparticles with fixed 20 nm diameter and varying inter-particles spacing, the aligning particles perpendicular to both the propagation and polarization direction of light the increasing of the inter-particles spacing produces theshorter wavelength shift of the position peaks. In contrast, aligning particles perpendicular to the propagation direction and parallel to the polarization direction of light they were slightly shiftedto longer wavelength as the inter-particles spacing increase. Finally for single Ag nanowire with varying the length of nanowire from 36.88 to 104.40 nm, both the absorption andscattering efficiencies peaks position get longer wavelength linearly shifted when the particlesaxis was aligned perpendicular to the propagation direction and parallel to the polarization direction of light. However, they shift to shorter wavelength when the particlesaxis was aligned both perpendicular to the propagation direction and the linear polarized light.

Plasmonic nanoparticles; perovskite solar cell; discrete dipole approximation

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