Solar cells could generate electricity during rains using Graphene

Q.  Solar Panels can now generate electricity even during rains. For this the material used is
- Published on 12 Apr 16

a. Glass
b. Graphene
c. Copper
d. Transparent Plastic

ANSWER: Graphene
 
  • Solar cells could generate electricity even during rains by making use of the 'wonder material' graphene.
  • Chinese researchers have now introduced a new approach for making an all-weather solar cell that is triggered by both sunlight and raindrops.
  • In order to allow rain to produce electricity as well, they coated this cell with a very thin film of graphene. Graphene is a two-dimensional form of carbon in which the atoms are bonded into a honeycomb arrangement.
  • It can readily be prepared by the oxidation, exfoliation and subsequent reduction of graphite. Graphene is characterised by its unusual electronic properties: It conducts electricity and is rich in electrons that can move freely across the entire layer.

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