METHOD FOR LASER-STRUCTURING THIN LAYERS ON A SUBSTATE IN ORDER TO PRODUCE MONOLITHICALLY CONNECTED THIN-LAYER SOLAR CELLS AND METHOD FOR PRODUCING A THIN-LAYER SOLAR MODULE

摘要

The present invention relates to a method for laser structuring thin layers on a substrate to produce monolithically connected thin layer solar cells comprising the steps of: providing a laser of laser wavelength; Providing a substrate (1) transparent to the laser wavelength with a second side, the first side of the substrate having a metal back-electrode thin layer (2), on which an absorber thin film (3) for thin layer solar cells - moving a laser beam (L) along a recording line on the substrate (1) and / or moving the laser beam (L) along a recording line, L) of the substrate (1). According to the invention, the laser beam (L) is emitted onto the second side of the substrate (1) and is incident on the metal back-electrode thin layer (2) through the substrate (1) The laser pulses of the beam are adjusted in the nano-, pico-, or femtosecond range and the laser beam is separated and removed along the recording line, the thin film 3 of the absorber disposed on the thin metal back-electrode layer 2, The laser-affected metal back-electrode thin layer 2 is moved in a manner that remains on the substrate.