Two-dimensional numerical simulations of high-efficiency silicon solar cells

摘要

This paper reports on the first use of two-dimensional (2D) device simulation for optimizing the front-finger spacing of one-sun, high-efficiency silicon solar cells of practical dimensions. We examine the 2D current flow patterns in these devices under various illumination conditions, resulting in improved insight into the operating conditions of the cells. Results for the optimal spacing of the front metal fingers are presented and compared to predictions obtained from 1D simulations. We also address difficulties facing the numerical modelling of high-efficiency silicon solar cells.