Solar Energy: The Physics And Engineering Of Ph... May 2026

The foundation of solar energy is the , first observed in 1839 by Edmond Becquerel. To understand how it works, we have to look at the subatomic level of semiconductors, usually silicon.

Silicon is naturally shiny, meaning it reflects light rather than absorbing it. Engineering a microscopic, textured surface or adding a chemical coating ensures that as many photons as possible enter the cell. Solar Energy: The Physics and Engineering of Ph...

By stacking a perovskite layer on top of a silicon base, engineers are pushing efficiencies toward 40%, potentially halving the cost of solar power in the coming decades. The foundation of solar energy is the ,