Method for electrically connecting several solar cells and photovoltaic module

Method for metallising and electrically connecting several solar cells, wherein the method comprises:

• provision of a carrier substrate which on one surface carries at least one first metal layer fixedly connected to the carrier substrate;
• provision of several solar cell substrates, wherein on one surface of at least one solar cell substrate a second metal layer is formed which is fixedly connected to the solar cell substrate;
• laying of the solar cell substrates in each case with a surface of a solar cell substrate adjacent to the first metal layer on the carrier substrate;
• application of energy to the metal layer by local irradiation of the metal layer by pulsed laser radiation with pulse durations in the range of less than several microseconds, such that the laser radiation is transmitted through at least one of the solar cell substrate and the carrier substrate in a direction towards the first metal layer, and that the first metal layer with the second metal layer is irreversibly connected directly to the adjacent solar cell substrate by heating due to absorbed laser radiation,
• wherein between the first metal layer and the adjacent second metal layer, no electrically conductive additional material is interposed with a liquefaction temperature which is substantially lower than the liquefaction temperature of the metals of the first and second metal layers.

Photovoltaic module of several metallised and electrically connected solar cells, comprising:

• several solar cells;
• a single carrier substrate which carries on a surface at least one first metal layer fixedly connected to the carrier substrate;
• wherein each of the solar cells is arranged laid with a surface on the first metal layer of the carrier substrate;
• and
• wherein each of the solar cells is electrically connected at least locally integrally with the metal layer.