UNSW researchers have investigated the impact of two types of soldering fluxes on TOPCon solar modules under damp heat conditions and have found that “no-clean” soldering fluxes can cause severe corrosion of front silver-aluminum contacts. The researchers have also found that denser metallisation structures and lower aluminium content improve corrosion resistance…
https://www.pv-magazine.com/2025/08/15/the-impact-of-soldering-flux-on-topcon-solar-cell-degradation/
