Photovoltaics: Plasma bonding provides for weather-resistant solar modules with long-term stability

A photovoltaic system consists of photovoltaic modules (solar modules), which in turn consist of individual solar cells. The conversion of sunlight into electrical current takes place in these cells. There are different types of solar cells (monocrystalline, polycrystalline or thin-film solar cells).
Above all, however, there are great qualitative differences between the modules of different manufacturers with regard to service life and efficiency. These stem from the manufacturing process and the quality of the materials used.

It is not unusual for photovoltaic modules to be damaged by weathering processes; the performance of the solar cells is diminished rapidly by the penetration of moisture (moisture diffusion).

Micro-fine plasma cleaning of photovoltaic-solar modules, Picture source: Benteler Maschinenbau GmbH
Openair® plasma treatment of the cover glass of solar modules, Picture source: Benteler Maschinenbau GmbH

Increasing the quality of photovoltaic-solar modules using Openair® plasma pretreatment:

  • Increase in the wettability of the cover glass
  • Clean contact surfaces for durable and diffusion-resistant bonding
  • Watertight sealing and bonding of the junction box on the reverse side (J-Box)
  • High-strength bonding of the solar modules to frame and back rail
  • Reliable anti-corrosion coating of the solar cell surface with AntiCorr® nanocoating in the PlasmaPlus® process.


The plasma nozzles can be easily integrated into new or existing manufacturing lines. This system is distinguished by high process reliability, short cycle times, and high processing speeds.

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