Solar Energy Mater Solar Cells 65 (1):347–353 Djeffal F, Bendib T, Arar D, Dibi Z (2013) An optimized metal grid design to improve the solar cell performance under solar concentration using multiobjective computation. Mater Sci Eng: B 178 (9):574–579
For the optimization problem of the front electrode pattern of solar cells, the goal is to find the best front electrode pattern to maximize the output power of solar cells. Mathematically, the front electrode pattern can be expressed as the layout of the conductive material within a prescribed design domain D.
The initial half-width r is set to 0.01 times the length of the design domain. Due to the width of the electrode grid is limited by the printing technology, the minimum half-width r of the component in this paper is set to be 25 μm. The four different initial topologies of the side-contact solar cells
It can be seen that the efficiency of the optimized solar cell increases with the increase of the number of components, but the increasing rate of efficiency is slowing down. With the increase of the number of components, the width of the front electrode becomes narrow, which is not friendly to the fabrication of the front electrode.
As we can see, the components are gathered together in the beginning, and the efficiency of the solar cell is 11.965%. As the optimization process continues, the components are gradually scattered, and the efficiency of the solar cell increases significantly, reaching 13.592% in the 700th step.
When the number of control points is 6, the efficiency of the solar cell is the largest, and its value is 13.694%. An optimized front electrode pattern can be obtained when the number of control points is 3, but the shape of the front electrode pattern is relatively simple, which will slightly affect the efficiency of the solar cell.
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