| Title |
Three-dimensional Modeling for the Transmittance of ITO/Mesh-Ag/ITO Multilayers using FDTD |
| Authors |
(Eou-Sik Cho) ; (Sang Jik Kwon) |
| DOI |
https://doi.org/10.5573/JSTS.2021.21.5.348 |
| Keywords |
Transparent conductive oxide; mesh structure; ITO/mesh-Ag/ITO multiple layer; full-wave simulation; 3D FDTD method |
| Abstract |
In order to improve the transmittance of ITO/Ag/ITO multilayers, Ag layer was formed with mesh structure. For more accurate and practical analysis, we performed the simulations using an optical wave simulator termed the full-wave simulation program. In our simulations, the three dimensional (3D) finite-difference time-domain (FDTD) method was used to realize the high density mesh structure, and a plane wave with variable wavelengths ranging from 250 to 850 nm is incident in the z-direction at normal incidence to the ITO/Mesh-Ag/ITO film surrounded by free-air space. From the simulation results, at a higher open ratio and lower Ag thickness, the transmittance of ITO/Mesh-Ag/ITO were not influenced by other parameters. Experimental measurements were performed depending on the various Ag mesh-spaces and mesh-widths. The open ratio of about 60 % has shown the acceptable results in the points of both the optical transmittance and the electrical conductance. |