Light-emitting diode (LED) is a term used on a light source very effective, energy saving replacement of the traditional light bulb. LED is a semiconductor device in which monochromatic light is produced as electrons undergo a transition across the band gap. Read more..
Photovoltaic cell ( solar cells or PV’s) is a term used to describe devices that convert solar radiation directly to electricity. PV’s are a sort of semiconductor that catch light and convert into pure and clean electricity. These devices are sound and smoke free, no moving parts. Read more..