Interpretation:Explanation on the use of n-type and p-type semiconductors in the solar panel.
Concept introduction:The photovoltaic cell used in solar panels is an important application of n and p-type semiconductor. If a semiconducting material is prepared such that a part of it is in n-type while the other part is p-type, the boundary between the two regions is called p-n junction. When light falls on such a material; electrons and holes are produced. The electrons move to the n-region and the holes to the p-region. This will produce a photo-voltage in the material, which will enable the direct conversion of light into electricity.
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