Sunpower Corporation

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Mario Gjukic

Gabriel Harley

Taeseok Kim

Matthieu Moors

Mark A Kleshock

Mohamed A Elbandrawy

Rico Bohme

Markus Nicht

Daniel Maria Weber

Methods of fabricating a solar cell including metallization techniques and resulting solar cells, are described. In an example, a semiconductor region can be formed in or above a substrate. A first metal layer can be formed over the semiconductor region. A laser can be applied over a first region of the metal layer to form a first metal weld between the metal layer and the semiconductor region, where applying a laser over the first region comprises applying the laser at a first scanning speed. Subsequent to applying the laser over the first region, the laser can be applied over a second region of the metal layer where applying the laser over the second region includes applying a laser at a second scanning speed. Subsequent to applying the laser over the second region, the laser can be applied over a third region of the metal layer to form a second metal weld, where applying the laser over the third region comprises applying the laser at a third scanning speed.

Laser techniques for foil-based metallization of solar cells

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Munich, Germany

Mario Gjukic