• Studies have hinted that graphene can also be used as a photovoltaic material, turning light into electricity. Using a cutting-edge spectroscopic method, scientists at EPFL and collaborators have demonstrated that by absorbing a single photon, graphene can generate multiple electrons that have enough energy to drive an electrical current.
  • The scientists used “doped” samples of graphene, which means that they added or subtracted electrons from it by chemical means. The experiment revealed that, when doped graphene absorbs a single photon, this can excite several electrons and do so proportionally to the degree of doping.
  • The scientists have made the first-ever direct observation of graphene’s photon-electron multiplication effect, which makes the material a very promising building block for any device that relies on converting light into electricity.

Share This Article