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The US Department of Energy’s (DOE’s) National Renewable Energy Laboratory (NREL) has published a report into the use of laser welding processes in solar module production, which researchers suggest could make the panels easier to recycle.

The report, ‘Towards Polymer-Free, Femto-Second Laser-Welder Glass/Glass Solar Modules,’ discusses the potential of femtosecond lasers, lasers emitted in short, sharp bursts over the duration of a fraction of a second, for module manufacturing. These laser pulses can be used to weld glass components of solar panels together, eliminating the need for plastic polymer sheets, which are currently widely used to connect glass components.