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首页> 外文期刊>Journal of the Korean Physical Society >Dependence of the Optimization of the Front Grid Design in Passivated Emitter and Rear Contact c-Si Solar Cells on the Finger Width and the Aspect Ratio
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Dependence of the Optimization of the Front Grid Design in Passivated Emitter and Rear Contact c-Si Solar Cells on the Finger Width and the Aspect Ratio

机译：前网格设计优化在钝化发射极和后触点C-Si太阳能电池上的指状物宽度和纵横比

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摘要

In this research, modeling was performed to optimize the grid of the front surface of a solar cell with the passivated emitter and rear contact (PERC) structure by considering the recombination characteristics. The front surface recombination velocity can be reduced in two main ways. The first method is to reduce the emitter Auger recombination by lowering the surface doping concentration during emitter formation, and the second method is to reduce the recombination that occurs at the surface when the electrode and the silicon are in contact, which is called metal-induced recombination and is represented by J(0.metal). Because J(0.metal) increases in proportion to the area of the front electrode, minimizing the finger width and number by optimizing the electrode design is important. Therefore, the front electrode grid should be designed considering the emitter characteristics, J(0.metal), according to the number of fingers and the resistance. In this research, the front grid of the solar cell was optimized via modeling using equations to calculate the number of fingers and the resistance. According to the finger width, the number of busbars, the sheet resistance, the aspect ratio, and the number of fingers corresponding to the maximum efficiency were identified. As a result, this modeling enabled us to optimize the front grid to the desired conditions, and we found that an increase in the number of busbars plays an important role in improving the efficiency of solar cells. In addition, the efficiency change with increasing number of busbars can be seen to be affected by the width of the finger and the resolution of the printed finger rather than the aspect ratio.
机译：在该研究中，通过考虑重组特性，进行模拟以优化利用钝化发射极和后触点（PERC）结构的太阳能电池的前表面的栅格。前表面重组速度可以以两种主要方式减少。第一种方法是通过降低发射极形成期间的表面掺杂浓度来减少发射器重组，第二种方法是减少当电极和硅接触时发生在表面处的重组，这被称为金属诱导的重组并由J（0metal）表示。因为J（0metal）与前电极的面积成比例地增加，所以通过优化电极设计来最小化手指宽度和数量是重要的。因此，根据指状物的数量和电阻，应考虑发射极特性j（0metal），设计前电极栅格。在该研究中，通过使用方程式的建模优化了太阳能电池的前网格来计算指状物的数量和电阻。根据手指宽度，识别母线的数量，薄层电阻，纵横比和对应于最大效率的指对应的指对应的指状物的数量。结果，该建模使我们能够优化前网格到所需的条件，并且我们发现汇流条的数量的增加在提高太阳能电池的效率方面发挥着重要作用。另外，可以看到随着汇流条数量越来越多的速度变化受手指的宽度和印刷手指的分辨率而不是纵横比的影响。

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