Complex sentence: However, as all of these technologies normally use high-temperature deposition techniques, the best performance normally comes from cells deposited on glass, even though avances in low-temperature deposition of CIGS cells have erased much of this performance difference.
Split into simpler sentences: However, as all of these technologies normally use high-temperature deposition techniques, the best performance normally comes from cells deposited on glass. Advances in low-temperature deposition of CIGS cells have erased much of this performance difference.