采用时域有限差分法(FDTD)对硅基太阳能电池表面抛物锥阵列微结构的反射特性进行研究，分析了抛物锥阵列的高度、底面占空比、周期等参数对其抗反射性能的影响。研究表明，反射率随底面占空比、高度的增大而减小。在锥高600 nm 且抛物锥底面直径等于周期的情况下，锥底面直径分别取128，160，213，256，320 nm 时，微结构在硅的响应光谱300~1200 nm 内均能获得低于3%的反射率；在此基础上提出一种大、小抛物锥相切排列的新型复合结构，将硅的响应光谱波段内的反射率进一步降低至1%以下，为硅基太阳能电池抗反射表面的设计提供了一种新的思路。

The anti-reflection properties of silicon based solar cell with parabolic cone array structure is studied. The parameters of structure that influence the anti-reflection performance, such as the height of parabolic cone array, the period and the duty factor, are analyzed by using of the finite-difference time-domain method. The analysis shows that the reflectivity tends to reduce as the height and duty factor of structure increase. According to the simulation result, less than 3% reflectivity can be achieved in the whole response spectrum of silicon solar cell (wavelength from 300 nm to 1200 nm) for 5 groups of parameters, i.e. the base diameter of parabolic cone is 128, 160, 213, 256, 320 nm respectively, with the array’s height of 600 nm and the period of array equal to the base diameter. A novel composite structure based on parabolic cone is also proposed, which reduces the reflectivity to 1%. It provides a novel design approach for the anti-reflective surface of silicon-based solar cells.