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Solar Cells
Beginning of paper
today are mostly made of silicon, one of the most common
elements on Earth. The crystalline silicon solar cell was one of the first types
to be developed and it is still the most common type in use today. They do not
pollute the atmosphere and they leave behind no harmful waste products.
Photovoltaic cells work effectively even in cloudy weather ....
Middle of paper
....eing less closely bound to the nucleii, are free to move in response to an
applied voltage or electric field. The fewer conduction electrons there are, the
higher the electrical resistivity of the material.
In semiconductors, the materials from which solar sells are made, the
energy gap Eg is fairly small. Because of this, electrons in the val.... |
| Word count: 1104 |
Page count: 5 |
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