Abstract
The modeling of two-dimensional large-area solar cells Student：Yu-Ting Hsu Advisor：Prof. Sheng-Fu Horng Institute of Electronics Engineering National Tsing Hua University Abstract In this study, various grid patterns were investigated by a simulation method for optimization of efficiency. Since low conductivity of the large-area solar cells will result in poor device performance, introducing metal grid to reduce the resistance of the substrate has been widely used. However, it is very important to find out a proper grid pattern to optimize the conductivity and shading effect. In our research, we have investigated a new kind of metal grid pattern, and we also constructed a system to find the best metal grid pattern in various devices, which can be a reference in the PV industry. First, we build the simulation model of the large-area solar cell with metal grid by real small-area solar cell using the circuit model and the mathematical method. Then we discuss the effect of the grid pattern to the solar cells, and analyze the result from several factors which affecting the efficiency of the device, including the short-circuit current and fill factor of the small area solar cell in the ideal condition. Finally, the shadow effect is considered to approach a real case. Keyword：large-area, solar cells, metal grid