Question

why does the solar panel have a blackened layer at the back?​

Answer 1

Answer:

Because of the way light interacts with a monocrystalline silicon layer, monocrystalline solar panels appear black in color. The process of aligning the silicon into one crystal, known as the Czochralski process, is energy-intensive and results in some wasted silicon.

Explanation:

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Answer 2

Answer:

as black easily observes the heat energy that is the solar energy from the sun rays solar panel have blackened layer in order to observe more heat energy.