Study on the Benefit of Half-Cut Cells towards Higher Cell-to-Module Power Ratio

Abstract

Half-cut cell technology has been proposed as an effective way to largely decrease the cell to module loss by decreasing the current level in the cell string. The type of laser is strongly correlated with the quality of the cut cells and further performance of the half-cell based modules. We investigated the effect of laser on the quality and performance of half-cut cells. And different types of half-cut cells were made into modules, the cell-to-module power ratio of which was evaluated and compared with full-size cells. Electroluminescence was employed to characterize the quality of the cut cells as well as the half-cell modules. Our results demonstrate that an approximately 2.2% average extra power gain can be obtained using half-cut cells for module encapsulation.