Evaluation and Optimization of Grid Patterns of Silicon Solar Cells by Diode and Series Resistance Model

Series resistance in solar cell is known to be one of the key factors which need to be optimized, especially through the design of the front pattern. This paper is the utilization of the improved diode and series resistance model to represent the solar cell. The results show: three buses are suitable for high square resistance and fine grid line. Plating technology can improve the absolute conversion efficiency over 17%. In addition, 71 fingers for three buses and 76 fingers for two buses were select in production. It is imagined that the proposed model is very useful for PV professionals who require simple, fast and accurate PV model to design their cells.