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2. 发明申请

WO2009059752A2 METHOD AND MEANS FOR CONNECTING THIN METAL LAYERS 审中-公开
标题翻译：方法和用于连接的薄金属层
公开(公告)号：WO2009059752A2
公开(公告)日：2009-05-14
申请号：PCT/EP2008009316
申请日：2008-11-05
申请人： SOLARION AG , ZIMMER KLAUS , BRAUN ALEXANDER , OTTE KARSTEN , GERLACH LOTHAR
发明人： ZIMMER KLAUS , BRAUN ALEXANDER , OTTE KARSTEN , GERLACH LOTHAR
IPC分类号： H01L31/02 , B23K26/32 , H05K3/32
CPC分类号： H01L31/02008 , Y02E10/50
摘要： Disclosed are a configuration for bonding a thin metal layer to two workpieces {B} and {A}, e.g. solar cells and film-backed/reinforced small contact strips as well as a method for the stable production of such a connection, comprising the following steps: (i) the backing film is removed from the solar cell; (ii) the two films/layers are pressed together; and (iii) the two parts are irradiated from the side of the rear contact {} of the thin-film solar cell. According to the invention, preferably two or three laser treatment steps are used for removing the backing film of the thin-film solar cell in an ablation process by means of a short-pulse laser and riveting the first metal layer, e.g. the rear contact of the solar cell, to the second metal layer, e.g. the small contact strip, by irradiating the same by means of a long-pulse laser. The energy density, pulse duration and temporary pulse form, pulse frequency, and wavelength for the ablation process and the welding/riveting process are selected according to the specific materials used. Such a laser riveting process can be used for electrically contacting thin-film solar cells with small flexible contact strips.
摘要翻译：一种用于在两个工件{B}和{A}，Z键合金属的薄层结构。 B.太阳能电池和彼此抵靠foliengestützen/或增强该接触带，以及用于稳定地制造，包括（i）所述的步骤，例如化合物的方法，以除去太阳能电池的基膜，（ii）所述两个膜的压缩/层，和（iii）的照射从薄膜太阳能电池的背接触{}的侧两个部分被呈现。根据本发明，优选两个或三个激光加工步骤用于通过烧蚀用短脉冲激光，除去薄膜太阳能电池的载体膜，和在第一金属层中，Z。作为太阳能电池的背面接触，第二金属层，例如。 B.接触带以通过照射长脉冲激光被铆接。的能量密度，脉冲持续时间和时间脉冲形状，脉冲频率和波长被选择相对于消融并且根据所使用的具体材料的焊接/铆接过程。这样Laservernietung可以用于与柔性接触片的薄膜太阳能电池的电接触。

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