具有表面電漿特性之W型奈米結構與一種新型太陽能電池抗反射層結構之設計

Abstract

我們使用二維時域有限差分法模擬並且比較V型結構與W型結構的表面電漿極化傳遞的性質，探討表面電漿極化在不同結構上的傳遞現象。我們發現表面電漿極化在W型結構中較不易傳遞，增加了局域的電場強度。另一方面，我們使用三維時域有限差分法與光追跡模擬太陽能電池的抗反射層。探討不同幾何結構反射次數對於太陽能電池的吸收效率，我們比較倒金字塔結構以及我們自己設計的結構對於太陽能電池的吸收效率，使用短路電流密度、幾何光學來分析，我們發現我們設計的結構與倒金字塔結構相比，具有較少的反射和較高的短路電流密度。

We study the propagation properties of surface plasmons polaritons in two-dimensional V-shape and W-shape nanostrucures by using the finite-difference time-domain method. It shows that some W-shape cases can increase the electric field intensities because the surface plasmon propagation is more difficult at W-shape nanostructures. On the other hand, we also propose a three-dimensional anti-reflection layer structure for solar cells. We use the three-dimensional finite-difference time-domain method and ray tracing method to simulate our designed the structure. We study the absorption in with different geometry structure, and compare with the inverted pyramid structures. We use the short circuit current density and geometry optics to discuss the reflection for solar cells. We found that our designed structure can have lesser reflection and larger short circuit current density as comparing to the inverted pyramid structures.