Laser Zentrum Hannover e.V. presented their laser technology for glass and photovoltaic material processing at Glasstec in Düsseldorf
Laser Zentrum Hannover e.V. (LZH) presented their laser technology for glass and photovoltaic material processing at Glasstec in Düsseldorf. Visitors to the fair saw demonstrations of laser processed glass and solar energy exhibits, and talked LZH’s expert staff on laser forming, cutting and welding of flat glass and glass tubes, glass-metal connections, welding with glass powder filler material, laser processing of photovoltaic materials like structuring or annealing thin layers, texturing solar cells, and other possibilities (cutting, drilling, etc.).
One LZH highlight at the convention showed laser welding of glass tubes for solar collectors. The advantages of laser welding, in comparison to conventional flame welding, includes controlled thermal heating and automation. Process reliability is increased, and the energy costs can be cut up to 70% by using laser technology. Processing of photovoltaic materials was also shown at the stand. One example of the advantages of using laser radiation for processing silicon solar cells is structuring the surface of the cells to achieve higher efficiency rates.