An electron hole occurs when an atom lacks electrons, which create a negative charged, and therefore the atom has a positive charge. light) in a process known as electroluminescence. When voltage is applied to the device, electrons fill in the electron holes in the semiconductor and simultaneously release energy as photons (i.e. LEDs commonly use indium-gallium-nitride (lnGaN) as their conductor material. In very general terms, a semiconductor is a substance or material with the ability to conduct an electrical current. LEDs or Light Emitting Diodes are actually one of the simplest types of semiconductor devices. Let’s take a look at the technology and science at work in lighting’s most efficient up-and-coming bulb. ![]() They are known as “solid-state” lighting because solid matter produces the light no filaments or gases required. Incandescents and halogens use heated filaments while fluorescents and HID lamps pass electricity through gases to produce light. ![]() Prior to this post, we’ve covered gas and filament-based lighting.
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