How Solar-powered Sunglasses Work

Solar-powered Sunglasses: Cheat Sheet
Could the sun meet all of our energy needs?
Could the sun meet all of our energy needs?
Photo courtesy of NASA

Stuff You Need to Know:

  • These Self-Energy Converting Sunglasses (SIG) are able to absorb solar energy through special lenses coated with dye-sensitizing solar cells (DSC). In addition to being used as a glass-coating dye, these cells can also be turned into low-cost, lightweight, transparent and flexible sheets.
  • Solar cells are engineered in two layers: a photosensitive layer made of ultrathin, nano-sized semiconductor crystals over a thin layer of titanium dioxide. When photons from the sun's rays are absorbed by the photosensitive layer, electrons accumulate on the titanium dioxide, creating an electrical current.
  • When solar cells absorb the sun's rays and convert sunlight into electrical energy, it's called photovoltaics. What's released? Nothing more than electrons.

Now, test your knowledge with these quizzes!

Check out these articles!