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Monocrystalline Photovoltaic Cells

IOTA® quartz is widely used in the photovoltaic industry for the manufacture of crucibles for Czochralski (CZ) single crystal silicon growth. This process is used to produce monocrystalline silicon solar cells which have the highest efficiency among commercial scale PV products.

IOTA® quartz is preferred for its reliable performance at high temperature and excellent fusion characteristics. IOTA CG (Crucible Grade) is the standard for the photovoltaic crucible industry. Crucibles made with IOTA CG are ideally suited for both long pulling times and multiple ingot pulling. In the most demanding applications, IOTA-6 can be used as a crucible liner to ensure the purity of the silicon ingot. Crystal pullers who use crucibles made from IOTA quartz report the highest silicon wafer yields.

Typical Values (ppm)

  Al B Ca Cr Cu Fe K Li Mg Mn Na Ni P Ti Zn
IOTA 6 8 < 0.05 0.7 0.003 0.001 0.2 0.1 0.2 0.07 0.008 < 0.1 0.002 0.1 1.4 0.01
IOTA CG 14 < 0.10 0.6 0.007 0.019 0.3 0.7 0.5 0.04 0.029 1.0 0.001 0.1 1.2 0.01
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