In a recent study, the authors proposed an optical broadband angular reflector having a band selective feature and high reflectivity rate for possible applications in photovoltaic applications using a binary photonic crystal. The obtained 100% reflectivity regions for TE and TM modes were in bandwidths of 244 nm and 134 nm, respectively. In this paper, we show theoretically the enhancement of the omnidirectional total-reflection wavelength range by using a ternary photonic crystal. By introducing a 30 nm-layer of Si₃N₄ between every two layers, constituting a period of the lattice, the regions of 100% reflectivity for TE and TM modes are improved to bandwidths of 269.641 nm and 155.364 nm, respectively. The improvement in the omnidirectional region is about 16%.

在最近的一项研究中，作者提出了一种具有波段选择性特征和高反射率的光学宽带角反射器，用于使用二元光子晶体的光伏应用中的可能应用。获得的 TE 和 TM 模式的 100% 反射率区域的带宽分别为 244  nm 和 134  nm。在本文中，我们从理论上展示了通过使用三元光子晶体来增强全向全反射波长范围。通过在每两层之间引入 30 nm 的 Si ₃ N ₄层，构成一个晶格周期，TE 和 TM 模式的 100% 反射率区域提高到 269.641  nm 和 155.364 的带宽 纳米，分别。全向区域的改进约为16%。