Nano-Particle Solar Array : Nano-Particle Solar Array

Requires: Victory Mesh/Victory Device
Minimum Versions: Victory Mesh 1.4.7.R / Victory Device 1.14.1.R
To enhance the performance of solar cells, plasmonic nanostructures are included in the surface coating layer . These can be simulated as spherical inclusions that are randomly spaced.
The plasmonic arrays are formed via beads of a given material on top of another material. In contrast to the pyramidal textured arrays seen via etching silicon, these devices are formed by heating the surface of a substrate coated with another material. This example will illustrate how to include irregular (most examples in the literature assume regular spacing) array inside the dielectric layer above the silicon surface.
The first step is to form a layered structure followed by extracting its boundary surface facets using the skeleton command . This gives an outer interface. The spheres will be inserted inside this structure using the combine command. In order to insert a sphere, it is necessary to splice its surface. Begin by creating a solid sphere, extracting its surface using the skeleton command, and then splicing its surface using the splice command. The splice command duplicates the surface facets into the material given, creating a sphere that can be inserted inside a region of the spliced material . This is a simple and quick method to insert interfaces inside a region.
This approach can be used to place semi-random spheres within the cuboid. It should be noted that these spheres cannot overlap the cuboid or other spheres . They must be completely contained within the material interfaces.
At this stage a valid surface mesh is generated which is suitable for any of the remesh statements. In this example a Delaunay remesh is performed, and refinement around the spheres is shown. The finite difference time domain light propagation method used in the device simulation illustrates the effect of the plasmon location on the optical intensity contours.