This work investigates the effect of titanium dioxide (TiO₂) nanostructures on the overall optical performance of gallium arsenide (GaAs) solar cells. The optical properties of three different TiO₂ nanostructures shapes namely, cubic, spherical, and pyramidal are studied to minimize the reflectivity of GaAs substrates. The dimensions of these three nanoparticle-shapes are varied in the simulations, and the effects of this parameter-variation on the reflectance is investigated. The simulation was carried using the wave optics module in COMSOL Multiphysics®. The results indicate that the spherical nanoparticle with a radius of 25 nm gives a reduction of the reflectance down to 9.2 % (compared to the 37.2 % of uncoated GaAs). Furthermore, the pyramidal nanoparticle with both width and length of 50 nm has a nearly similar performance achieving a 9.8 % reflectance. However, the cubic nanoparticles with a width of 100 nm achieved the worst optical performance with a reflectance of 28 %.

这项工作研究了二氧化钛（TiO ₂）纳米结构对砷化镓（GaAs）太阳能电池整体光学性能的影响。三种不同的TiO ₂的光学性质研究了纳米结构形状，即立方，球形和金字塔形，以使GaAs基板的反射率最小。在仿真中，这三种纳米粒子形状的尺寸都发生了变化，并且研究了该参数变化对反射率的影响。使用COMSOLMultiphysics®中的波动光学模块进行了仿真。结果表明，半径为25 nm的球形纳米粒子的反射率降低到9.2％（未涂覆的GaAs的反射率为37.2％）。此外，具有50nm的宽度和长度的金字塔形纳米颗粒具有几乎相似的性能，实现9.8％的反射率。但是，宽度为100 nm的立方纳米粒子的光学性能最差，反射率为28％。