Study on mitigation method of solder corrosion for crystalline silicon photovoltaic modules

Ju Hee Kim, Jongsung Park, Donghwan Kim, Nochang Park

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


The corrosion of 62Sn36Pb2Ag solder connections poses serious difficulties for outdoor-exposed photovoltaic (PV) modules, as connection degradation contributes to the increase in series resistance (RS) of PV modules. In this study, we investigated a corrosion mitigation method based on the corrosion mechanism. The effect of added sacrificial metal on the reliability of PV modules was evaluated using the oxidation-reduction (redox) reaction under damp heat (DH) conditions. Experimental results after exposure to DH show that the main reason for the decrease in power was a drop in the module's fill factor. This drop was attributed to the increase of RS. The drop in output power of the PV module without added sacrificial metal is greater than that of the sample with sacrificial metal. Electroluminescence and current-voltage mapping analysis also show that the PV module with sacrificial metal experienced less degradation than the sample without sacrificial metal.

Original languageEnglish
Article number809075
JournalInternational Journal of Photoenergy
Publication statusPublished - 2014

Bibliographical note

Publisher Copyright:
© 2014 Ju-Hee Kim et al.

ASJC Scopus subject areas

  • General Chemistry
  • Atomic and Molecular Physics, and Optics
  • Renewable Energy, Sustainability and the Environment
  • General Materials Science


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