| 摘要 |
<p>The invention relates to a device and a method for removing thin layers on a support material, especially for removing barrier layers of a thin-layer solar cell. The aim of the invention is to provide an economical means of removing strips of up to a few millimetres in width without damaging the substrate of the thin-layer solar cell underlying the layer to be removed. To this end, a laser treatment device with a laser resonator and an optical system is provided. The optical system projects the treatment beam produced by the layer resonator over an area of 1 mm<2> to 1 cm<2> on the surface to be treated with an essentially homogenous distribution of power. Thin layers can be effectively removed from the substrate at pulse width of less than 100 ns and with a pulse energy density of 0.1 J/cm<2> to 10 J/cm<2>.</p> |
