In this study, a grating with a Gaussian distribution was used to increase the absorption of light by amorphous silicon thin film solar cells. A grating is an effective structure for trapping light inside the active layer of a cell, so a two-dimensional Gaussian grating with a rectangular structure was placed on the front surface of the cell. The results obtained by using the finite element method showed that the Gaussian grating significantly enhanced the absorption of light in the visible and near-infrared ranges by a cell with a thickness of 0.5 μm compared with a cell without gratings and a cell with normal gratings. The maximum average light absorption by the cell with a Gaussian grating was 84.8%, which was 90% higher compared with the reference cell. In addition, the short-circuit current density and efficiency were determined as 34.2 and 17.6 mA/cm, respectively, which were 72% and 72.5% higher, respectively, compared with the reference cell. The proposed structure could be used in a cell to convert more light into electricity.

中文翻译：

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用于增强非晶硅薄膜太阳能电池光吸收的高斯光栅

在这项研究中，采用高斯分布的光栅来增加非晶硅薄膜太阳能电池对光的吸收。光栅是一种将光捕获在电池有源层内部的有效结构，因此在电池的前表面放置了具有矩形结构的二维高斯光栅。利用有限元方法得到的结果表明，与没有光栅的电池和有普通光栅的电池相比，高斯光栅显着增强了厚度为0.5μm的电池对可见光和近红外范围内的光的吸收。高斯光栅池的最大平均光吸收率为84.8%，比参考池高90%。此外，短路电流密度和效率分别为34.2和17.6 mA/cm，与参考电池相比分别高出72%和72.5%。所提出的结构可用于电池中，将更多的光转化为电能。