Because there are many crystals in each cell there is less freedom for the electrons to move.
Poly crystalline solar panels.
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These panels are made of silicon.
Use this panel alone or add additional panels to create a custom solar energy system.
Polycrystalline solar panels are also referred to as multi crystalline or many crystal silicon.
However instead of using a single crystal of silicon manufacturers melt many fragments of silicon together to form the wafers for the panel.
The polycrystalline solar panels have a higher temp.
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Because there are many crystals in each cell.
To make the cells of polycrystalline panel fragments of silicon are melted together to form the wafers.
As a result polycrystalline solar panels have lower efficiency ratings than monocrystalline panels.
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Coefficient than the solar panel comprised of mono cells.
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Polycrystalline solar panels are also made from silicon.