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Analysis of the Scattering Properties of Textured TCO Structures for Thin Film Silicon Solar Cells

机译:薄膜硅太阳能电池纹理TCO结构的散射特性分析

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The texture of transparent conducting oxides (TCO) plays an important role for the performance ofamorphous (a-Si:H) and microcrystalline (μc-Si:H) thin-film silicon solar cells. Different TCO morphologies andfeature sizes lead to different light in-coupling, light trapping, and absorbance in the cell. Induced by TCO scattering,the light path is enhanced which results in a higher absorbance in the silicon layer. We have investigated thescattering properties of sputtered and post-etched ZnO substrates. Varying the etching time results in different featuresizes. To find relations between the surface topology and the scattering behaviour we developed a model, whichallows for an analysis of the surface morphology and the simulation of the angle resolved scattering behaviour ofrandomly textured TCOs. The model uses atomic force microscope data and is based on geometric optics. In thisarticle experimental and simulated results are analysed and discussed.
机译:透明导电氧化物(TCO)的质地对于其性能起着重要作用。 非晶(a-Si:H)和微晶(μc-Si:H)薄膜硅太阳能电池。不同的TCO形态和 特征尺寸会导致池中的光耦合,光捕获和吸收率不同。由TCO散射引起, 增强了光路,从而在硅层中获得了更高的吸收率。我们已经调查了 溅射和蚀刻后的ZnO基板的散射特性。改变蚀刻时间会产生不同的特征 大小。为了找到表面拓扑与散射行为之间的关系,我们开发了一个模型,该模型 可以分析表面形态并模拟角分辨散射行为 随机纹理的TCO。该模型使用原子力显微镜数据,并且基于几何光学。在这个 文章对实验和仿真结果进行了分析和讨论。

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