论文标题
GAAS纳米酮，倒纳米酮和沙漏形纳米array太阳能电池的光学模拟和分析
Optical Simulation and Analysis of GaAs Nanocone, Inverted Nanocone, and Hourglass Shaped Nanoarray Solar Cells
论文作者
论文摘要
在本文中，我们通过执行有限的差异时域（FDTD）模拟来研究GAAS纳米酮（NC），倒纳米酮（INC）和沙漏（HG）形状太阳能电池的光学性质。将不同的结构与传统的圆柱纳米线进行比较，其光吸收，反射率，透射率和光生成。对于所有结构，都观察到不同光学性质与侧壁角的变化。可以看出，NC，INC和HG的最佳性能是在左侧纳米酮角度〜7°，〜4°的角度以及侧壁底部纳米角度分别〜9°的角度获得的，NC具有最佳的整体性能，遵循INC的最佳整体性能，除了HG的性能更好的是，这些结构属于这些结构。 HG and Inc结构显示出略大的太阳角的吸收改善，归因于其更好的光捕获特性。最后，进行了一项期间的研究，以观察密集和稀疏的细胞堆积对纳米结构的光学性质和光发电概况的影响，并且可以观察到，稀疏间隔的纳米线具有更好且更均匀分布的光发元素，这将极大地改善径向交界液的载体提取。
In this paper, we have investigated the optical properties of GaAs nanocone (NC), inverted nanocone (INC), and hourglass (HG) shaped solar cells by performing Finite Difference Time Domain (FDTD) simulations. The different structures are compared for their light absorptance, reflectance, transmittance, and photogeneration with traditional cylindrical nanowires. The variation of the different optical properties with the sidewall angle is observed for all the structures. It is seen that the best performance of NC, INC, and HG is obtained at a sidewall nanocone angle of ~ 7°, ~ 4°, and at a sidewall bottom nanocone angle of ~ 9° respectively, with the NC having the best overall performance followed by INC, except for very large angles where the performance of HG is better than INC. The optical properties of these structures were also observed for different sun angles; the HG and INC structures show improvement in absorption for slightly larger sun angles attributed to their better light trapping properties. Finally, a period study is done to observe the effect of dense and sparse cell packing on optical properties and photogeneration profiles of the nanostructures and it is observed that the sparsely spaced nanowires has a better and more evenly distributed photogeneration profile, which will greatly improve the carrier extraction of the radial junction solar cells.
