What types of color LEDs are available?

Apart from lighting aims, one of the benefits of the LED is the ability to directly produce a connector of light of a selected color. It means no need to use color filters, which significantly affect the energy efficiency of such lighting. The color of produced light depends on the chemical content (doping way) of material which does semiconductor include. Underneath the basic types of materials used in LED are presented together with the radiation produced by it:

  • Aluminium gallium arsenide (AlGaAs)LED emits red color light and infrared radiation
  • Aluminium gallium phosphide (AlGaP) – LeD emits green color light
  • Aluminium gallium indium phosphide (AlGaInP)LED emits orange-​red, orange, yellow and green color light
  • Gallium(III) phosphide (GaP)LED emits red, yellow and green color light
  • Gallium(III) nitride (GaN)LED emits pure green color and blue color light
  • Indium gallium nitride (InGaN)LED emits radiation in the near ultraviolet, blue-​green and blue color light
  • Zinc selenide (ZnSe)LED emits blue color light
  • Diamont ©LED emits ultraviolet radiation
  • Aluminium nitride (AlN), Aluminium gallium nitride (AlGaN)LED emits radiation in the near ultraviolet
  • What are the available types of lighting equipment using LED?

    Single-​diode (LED) – intended to be powered by AC at a stabilized value of current, mainly 350mA, 700mA or 1A. LED diodes with a power of 1W and above are classified as high power LED that corresponds approximately to the current of 350mA.

    LED modules combined from few single-​diode LED mounted on the common base, for example, PCB. LED module often contains other elements, for instance, optical (light focusing lens), mechanical, or electrical and electronic components. LED modules containing the suitable layout stabilizing the operating poinf of LED can be powered by voltage power supply or even by network voltage. Mostly LED modules which are adapted to be powered by 10V or 24V voltage are being used.

    LED modules equipped with sticks used in traditional bulbs or compact fluorescent lamps, in the following will be referred to as LEDs. LEDs can be used as a direct replacement of traditional bulbs or halogen bulbs (retrofit LED).

    LED lamp – lamp, in which the light source is LED or LED modul(es).