Effect of Laser Ablation on Electroplated-Metallization Crystalline Silicon Solar Cells

Abstract

In this work, a front-side metallization based on laser ablation and electrochemical plating contacts is proposed for the improvement in shading loss and short-circuit current density. The influences of nanosecond laser ablation on finger width, surface morphology, and cell performance are investigated. The optimization of laser ablation and electroplating contacts are achieved to improve the finger width, aspect ratio, and metal shading effect. The results of Suns-Voc measurement indicate the improvement in recombination issues. A average performance of Ni/Cu plated solar cell exhibits a 0.54 mA/cm2 increase of short-circuit current density (Jsc), 0.10% increase of fill factor (FF), 0.03 Ωcm2 decrease of series resistance (Rs), and 0.28% increase of conversion efficiency (n).