Most widely used solar cell material is

This question was previously asked in
RRB ALP Electronics Mechanic 21 Jan 2019 Official Paper (Shift 3)
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  1. steel
  2. silicon
  3. mercury
  4. Cast iron

Answer (Detailed Solution Below)

Option 2 : silicon
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Solar cell

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  • A solar cell is an electronic device that converts the energy of light directly into electricity by the photovoltaic effect.
  • The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material. Electrons emitted in this manner are called photoelectrons.
  • The solar cell is made up of silicon.
  • A solar cell consists of a layer of p-type silicon placed next to a layer of n-type silicon.
  • When we connect the n-type and p-type layers with a metallic wire, the electrons will travel from the n-type layer to the p-type layer by crossing the depletion zone and then go through the external wire back of the n-type layer, creating a flow of electricity.
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