结合硅太阳电池正面激光增强接触优化（LECO）技术,制备n型TOPCon太阳电池金属化电极,通过醋酸盐雾实验模拟户外工作湿热条件,探究金属电极可靠性。通过玻璃粉的TGA-DSC分析和太阳电池LECO工艺前、后电性能分析,发现LECO工艺正银玻璃的转变温度（Tg）不宜太低、刻蚀能力无需太强,Pb-B-Si、Pb-B-Si-Bi体系玻璃比Pb-B-Te体系玻璃更适用于LECO工艺。通过电池耐醋酸分析发现,Pb-B-Si-Bi体系玻璃正银电极转换效率衰减较小。
Abstract
Combining laser enhanced contact optimization （LECO） technology on the front of cells and preparing n-type TOPCon solar cells metallized electrode, the reliability of metal electrode is investigated by simulating damp and hot condition of outdoor work through acetic acid spray experiment. The glass performance is analyzed via TGA-DSC. The electrical performances of solar cells before and after LECO treatment are analyzed. It is found that the transition temperature （Tg） of glass for the LECO proces should not be too low, and the etching ability should not be too strong. Pb-B-Si and Pb-B-Si-Bi system glasses are more suitable for the LECO process than Pb-B-Te system glasses. The acetic acid resistance of the cells is analyzed,and it is found that the conversion efficiency of Pb-B-Si-Bi glass front silver electrode has less attenuation.
关键词
太阳电池 /
金属化 /
可靠性 /
转换效率 /
玻璃粉 /
LECO工艺
Key words
solar cells /
metallization /
reliability /
conversion efficiency /
glass powder /
LECO process
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基金
中央引导地方科技发展资金项目（2023ZY1001）; 温州市揭榜挂帅项目（ZG2023042）
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