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通过-合金种子层在电Ni/Cu/Ag中增强粘合并减少欧姆接触

Zhao Wang^1,2, Haixia Liu¹, Daming Chen²

¹School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China.

Materials (Basel, Switzerland)

|June 19, 2024

概括

研究人员开发了一种新的Ni/Si合金种子层,用于n型道氧化物消极接触式 (n-TOPCon) 太阳能电池. 这提高了粘附性,降低了接触阻力,提高了太阳能电池的性能,降低了成本.

科学领域:

材料科学材料科学材料科学
太阳能光伏发电是如何实现的
半导体设备物理半导体设备物理

背景情况:

合Ni/Cu/Ag接触器是太阳能电池中使用银的成本高效替代品.
在n型道氧化物消极接触器 (n-TOPCon) 中的电接触器,太阳能电池面临着后侧电网线粘附和欧姆接触电阻的挑战.

研究的目的:

为了解决粘附问题并降低n-TOPCon太阳能电池中的欧姆接触电阻.
提出并验证使用Ni/Si合金种子层的新型金属化方法.

主要方法:

通过电子束蒸发在太阳能电池背面沉积一个层.
使用H2SO4:H2O2蚀刻剂去除多余的,并在化 (300-425°C) 过程中形成种子层.
描述Ni/Si合金层的粘附性,接触阻力和化合物形成.

主要成果:

与直接涂层相比,粘合强度增加了超过0.5N mm−1,接触电阻减少了0.5 mΩ cm2.
/合金表现出优越的导电能力,粘合力和表面粗度.
在375°C的最佳化结果是NiSi化合物,1 mΩ cm−2的接触电阻和2.7 N mm−1的粘合力.

结论:

/合金种子层有效地增强后侧电网线的粘附性,并降低n-TOPCon太阳能电池中的欧米接触电阻.
这种新的方法提供了一种可行的技术解决方案,用于降低n-TOPCon太阳能电池制造的成本和提高效率.

关键词:

这是一种Ni/Si合金.粘附性粘附性粘附性粘附性热温度是指热温度的温度.在 n-TOPCon 太阳能电池上涂装涂装涂装涂装

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