The mechanism and damage of snail trails

  title={The mechanism and damage of snail trails},
  author={Zhou Shudong},
  journal={2017 IEEE 19th Electronics Packaging Technology Conference (EPTC)},
  • Zhou Shudong
  • Published 2017 in
    2017 IEEE 19th Electronics Packaging Technology…
We found Sulfur in module's EVA film which has snail trails by Atomic Absorption spectrometer, Sulfur reacted with “Ag” in silver paste and become black Silver sulfide, this is the reason of snail trails. As the EVA film can't reach the requirements of photovoltaic yellowing test, there's no choice but to add high temperature anti-yellowing agent, such as… CONTINUE READING