Optimal transparent one-dimensional metallo-dielectric photonic crystal structures

Abstract

We theoretically investigated the optical transmission of finite one-dimensional metallo-dielectric photonic crystals composed of Ag and ZnS layers. The transmission spectra strongly depend on the positions of the metal layers in the unit cell. The intensity and the bandwidth of the transmission increase when the Ag layer is closer to the center of the unit cell. The phenomena are due to the anti-reflection coating effect caused by the outer dielectric layers. Optimal transparent metallo-dielectric photonic crystal structures can be useful in improving the performance of thin-film devices, such as transparent heat mirrors and transparent electrodes.