Structuring

The laser generates structures in surfaces with precision, without contact and with no force

The workpiece properties are hardly affected
The laser-structured oil lubricating cups on the tool surface influence its rubbing characteristics
+ The laser-structured oil lubricating cups on the tool surface influence its rubbing characteristics
Structuring alters the technical properties of the surface. Such properties may include the surface’s reflectivity or frictional properties.

To reduce friction, small depressions are produced in the material. The depressions hold lubricants. They may be tiny craters, produced by a single laser pulse. Deeper craters are created by multiple laser pulses aimed at the same spot. For some workpiece shapes, oblong depressions such as pockets or short lines are used to achieve the desired frictional properties. Such depressions are made by positioning the craters close to each other so that they overlap.
 
The edge insulation prevents a short-circuit on the edges of the solar cells – the degree of efficiency increases
+ The edge insulation prevents a short-circuit on the edges of the solar cells – the degree of efficiency increases
In photovoltaics, short pulse lasers are used for edge insulation, for drilling crystalline solar cells made of silicon, or for structuring thin-layer solar cells. The solar cells basically consist of a pn-transition, whereby the emitter is only a few hundred nanometers thick.

For production technological reasons a short circuit occurs at the edges of the solar cell which reduces its degree of efficiency. During edge insulation the material is vaporized, thus removing the charge carrier responsible for the short circuit. This results in the creation of 50 μm grooves with depths of between 5 and 10 μm.
 
 
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