Non-destructive Lamination Control for PV Modules Using NMR Spectroscopy

The PV NMR project addresses the urgent need for continuous lamination control in the manufacture of PV modules and laminated safety glass. The service life and reliability of PV modules depend heavily on the quality of the lamination, which is currently inadequately monitored. In particular, there is no suitable control method for glass-glass modules. Currently, destructive methods are used that only allow random sampling. This situation leads to problems such as corrosion and delamination, which reduce the optical quality and energy yield of the modules.

The aim of the project is to develop a fast, non-destructive method for precisely determining the degree of cross-linking in polymer films in PV modules and laminated safety glass using NMR spectroscopy. This will enable inline lamination control, allowing manufacturers to test each individual module. The solution involves modifying an NMR sensor, which is adapted for measurements at higher temperatures in order to deliver reliable results in the production environment.