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Fourier analysis for the study of light scattering properties of randomly textured ZnO films

机译：傅里叶分析用于研究随机织构的ZnO薄膜的光散射特性

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摘要

We introduce a model which allows for the description of scattering properties of randomly textured ZnO films by evaluating a Fourier surface analysis. The interface is developed into a series of periodic gratings with well denned diffraction angles. The scattering efficiency is assumed to be the Fourier transform of the surface profile. This model is applied on different kinds of textures and compared with experimentally obtained angularly resolved scattering. This Fourier model is extended to obtain the scattering properties with both spatial and angular resolution which allows the study of the light scattering of individual surface elements. The identification of structures which scatter light into larger angles is possible. The calculated scattering properties show a good agreement to the experimentally obtained data. The results are essential for the further improvement of surface texture to optimize light trapping in thin-film solar cells.
机译：我们介绍了一个模型，该模型可以通过评估傅立叶表面分析来描述随机织构的ZnO薄膜的散射特性。该界面被开发为一系列具有良好衍射角的周期性光栅。散射效率假定为表面轮廓的傅立叶变换。该模型适用于不同种类的纹理，并与通过实验获得的角度分辨散射进行了比较。扩展该傅立叶模型以获得具有空间分辨率和角分辨率的散射特性，这允许研究单个表面元素的光散射。可以识别将光散射到更大角度的结构。计算的散射特性与实验获得的数据显示出良好的一致性。该结果对于进一步改善表面质地以优化薄膜太阳能电池中的光捕获至关重要。

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