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首页> 外文会议>European photovoltaic solar energy conference >INVESTIGATIONS ON THE INFLUENCE OF A FORMING GAS ANNEAL ON THE MECHANICAL PROPERTIES OF THE PRINTED AG THICK FILM FRONT SIDE CONTACT OF SOLAR CELLS AFTER COFIRING
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INVESTIGATIONS ON THE INFLUENCE OF A FORMING GAS ANNEAL ON THE MECHANICAL PROPERTIES OF THE PRINTED AG THICK FILM FRONT SIDE CONTACT OF SOLAR CELLS AFTER COFIRING

机译：成型后气体对精制后太阳能电池的印刷AG厚膜前面板接触力学性能的影响

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摘要

The beneficial effect of a forming gas anneal (FGA) in hydrogen atmosphere on the fill factor (FF) ofscreen printed solar cells has been shown previously [1, 2]. In this contribution the effect of a FGA on themechanical properties of the silver printed front side contact of solar cells is investigated for most relevant wafersurfaces (mc, Cz, EFG, each flat as well as textured). In particular, the adhesion of the busbar to the surface of thesilicon wafer is examined by using standardized pull test conditions after soldering pre-soldered Cu-ribbons onto thebusbars of the solar cells. It was found that the FGA has no significant influence on the mechanical properties of thebusbars including the adhesion strength. Samples which experienced higher than optimal firing conditions showslightly higher adhesion strength and a wider distribution of the forces needed to detach the busbar.
机译：氢气气氛中形成气体退火（FGA）对金属填充率（FF）的有益影响 丝网印刷的太阳能电池以前已经显示过[1、2]。在此贡献中，FGA对 对于最相关的晶片，研究了太阳能电池的银印刷正面触点的机械性能 表面（mc，Cz，EFG，每个平面以及纹理）。尤其是，母线与电源线表面的附着力 在将预焊接的铜带焊接到硅片上之后，通过使用标准的拉力测试条件来检查硅片。 太阳能电池的母线。结果发现，FGA对合金的机械性能没有显着影响。 母线的附着强度包括在内。经历高于最佳烧结条件的样品显示 稍高的粘合强度和分离母线所需的力的分布范围更广。

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