LEDs (Light Emitting Diodes) are semiconductor light sources that combine a P-type semiconductor (larger hole concentration) with an N-type semiconductor (larger electron concentration). Applying a sufficient forward voltage will cause the electrons and holes to recombine at the P-N junction, releasing energy in the form of light.
Compared with conventional light sources that first convert electrical energy into heat, and then into light, LEDs (Light Emitting Diodes) convert electrical energy directly into light, delivering efficient light generation with little-wasted electricity.
How is White Light Created?
There are several methods of generating white light using LEDs. Below is 2 typical emission methods.
Blue LED＋Yellow Phosphor
Combining a blue LED with yellow phosphor, which is a complementary color, will yield white light. This method is easier than other solutions and provides high efficiency, making it the most popular choice on the market.
