Solar powered cars
Powering cars using solar energy has some great benefits:
- Using solar energy means fossil fuels (which are a limited resource) will be used less.
- Solar energy is free.
- Solar energy doesn’t cause pollution.
- Solar energy will never run out
Like solar thermal energy which converts solar energy to heat, PV cells directly convert sunlight into electricity. When sunlight (photons) strike PV cells, they excite electrons and allow them to flow, creating an electric current. PV cells are made of semiconductor materials such as silicon and alloys of indium, gallium and nitrogen. Crystalline silicon is the most common material used and has an efficiency rate of 15-20%..