研究目的
To investigate the influence of the difference in module structures on the degradation of crystalline silicon solar cells.
研究成果
The study found that the degradation mode of crystalline silicon solar cells varies depending on the module structure, influenced by moisture and acetic acid concentration distribution. The G/BS module showed significant degradation from the cell edge, while the G/G module exhibited mosaic-like degradation patterns, suggesting different corrosion phenomena.
研究不足
The degradation rate observed was faster than in ordinary crystalline silicon solar modules due to modified paste composition and more unfavorable test conditions. The amount of acetic acid in the G/G module was not quantified, limiting direct comparison.
1：Experimental Design and Method Selection:
Two different photovoltaic modules were fabricated to compare degradation modes using electrical characteristics and electroluminescence images under high-temperature and high-humidity conditions.
2：Sample Selection and Data Sources:
Bifacial solar cells of n-type monocrystalline silicon were used, with specific metallization and encapsulation materials.
3：List of Experimental Equipment and Materials:
Solar simulator for electrical characteristics measurement, electroluminescence imaging setup, and high-temperature high-humidity test chamber.
4：Experimental Procedures and Operational Workflow:
Fabrication of modules, high-temperature and high-humidity testing, electrical characteristics measurement, and electroluminescence imaging before and after testing.
5：Data Analysis Methods:
Comparison of electrical characteristics and electroluminescence images to identify degradation modes.
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