Abstract
High-density crystalline silicon modules have recently invoked large interest in PV industry due to its higher efficiency. However, high-density stacking of cells in this kind of module may have additional reliability problem, which might cause higher power loss during outdoor operation. Modules based on half-cut cells have been widely studied due to their higher power output compared with modules based on full cells. When a cell is half cut, its current level is half reduced. When it is 1/3 cut, its current level is decreased by 2/3. However, high-density modules based on 1/3-cut cells have rarely been studied. Therefore, in this work, damp heat (DH), thermal cycle (TC), UV irradiation and humidity freezing (HF) test were utilized to study the power degradation performance of these high-density modules fabricated with 1/3 cut cells. The obtained results show that these novel high-density modules with negative space between 1/3 cut cells have good reliability in various environmental conditions.
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