Dear all ,
I am simulating a plasmonic solar cell using gold triangular nanoprisms, the triangle is equilateral with sides= 9nm and prism’s height is 20nm.
Here is my strcture:
I want to calculate Scattering Cross Section, I used the cross section analysis group. + TFSF source on the whole array, I used linear wavelength spacing in the frequency monitor with 600 points (from 400nm to 1000nm wavelength)
From the literature, Only one peak should appear( since the prism’s dimensions are smaller than 100nm) . (Link of paper attached in the end).
In my simulation I have one peak and small peaks at the right tail :
I think this is the problem, the staircase causes many peaks in the simulation, but I can’t get rid of them! (it will increase my simulation time tremendously )
If anyone has simulated triangles before, do they have meshing problem because of staircasing?
" For nanoparticles with sizes down to the optical wavelength, the surface plasmon resonances
are clearly dipolar and can be satisfactorily described by the lowest order of the series of spherical
harmonics of Mie theory. For larger particles, typically in the 100 nm range, retardation
effects inside the plasmonic particles lead to the appearance of higher order multipolar plasmon
resonances that show off as new features in the optical spectra "