How do LED lights work?

♤ Light Emitting Diode (LED) is made of semiconductor materials. A diode is a device that allows current to flow in only one direction.

♤ When electricity is passed through the diode the atoms in one material (within the semiconductor chip) are excited to a higher energy level and the excess energy is then released in the form of light as the atoms shed electrons to the other material within the chip.

♤ The color of the light from the LED is a function of the materials and processes that make up the chip.