Dossou Kokou B, Botten Lindsay C, Asatryan Ara A, Sturmberg Björn C P, Byrne Michael A, Poulton Christopher G, McPhedran Ross C, de Sterke C Martijn
CUDOS, University of Technology, Sydney, NSW 2007, Australia.
J Opt Soc Am A Opt Image Sci Vis. 2012 May 1;29(5):817-31. doi: 10.1364/JOSAA.29.000817.
A finite element-based modal formulation of diffraction of a plane wave by an absorbing photonic crystal slab of arbitrary geometry is developed for photovoltaic applications. The semianalytic approach allows efficient and accurate calculation of the absorption of an array with a complex unit cell. This approach gives direct physical insight into the absorption mechanism in such structures, which can be used to enhance the absorption. The verification and validation of this approach is applied to a silicon nanowire array, and the efficiency and accuracy of the method is demonstrated. The method is ideally suited to studying the manner in which spectral properties (e.g., absorption) vary with the thickness of the array, and we demonstrate this with efficient calculations that can identify an optimal geometry.
针对光伏应用，开发了一种基于有限元的任意几何形状吸收型光子晶体平板对平面波衍射的模态公式。这种半解析方法能够高效且准确地计算具有复杂晶胞的阵列的吸收情况。该方法能直接从物理角度洞察此类结构中的吸收机制，可用于增强吸收。将此方法的验证和确认应用于硅纳米线阵列，并证明了该方法的效率和准确性。该方法非常适合研究光谱特性（如吸收）随阵列厚度变化的方式，我们通过能确定最佳几何形状的高效计算来证明这一点。
