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[...]... monochromatic Colors: white LEDs There are 2 primary ways of producing high intensity whitelight using LEDs Colors: white LEDs One is to use individual LEDs that emit three primary colors red, green, and blue and then mix all the colors to form white light Colors: white LEDs That method is called multicolored white LEDs (sometimes referred to as Red Green Blue LEDs) RGB LEDs need electronic circuits... LEDs The other is to use a phosphor material to convert monochromatic light from a blue or UV LED to broad-spectrum white light, much in the same way a fluorescent light bulb works Colors: white LEDs That LEDs are usually blue InGaN LEDs with a coating of a suitable material It absorbs the light from the blue LED and emits in a broad range from greenish to reddish Colors: white LEDs Almost white LEDs. .. gap The band gap of the semicondutor substrate is just right equal to the energy of an emitted photon, that determine the wavelength and color of lights Colors LEDs are available in red, orange, amber, yellow, green, blue and white Blue and white LEDs are much more expensive than the other colours Colors The color of LED is determined by the semiconductor material, not by the colors of the 'package' (... material It absorbs the light from the blue LED and emits in a broad range from greenish to reddish Colors: white LEDs Almost white LEDs nowadays are produced by this method Colors: RGB system Multi-color LEDs offer not merely another means to form white light, but a new means to form light of different colors Most perceivable colors can be formed by mixing different amounts of three primary colors This . Colors: monochromatic Colors: white LEDs There are 2 primary ways of producing high intensity white- light using LEDs Colors: white LEDs One is to use individual LEDs that emit three primary colors. colors to form white light Colors: white LEDs That method is called multi- colored white LEDs (sometimes referred to as Red Green Blue LEDs) . RGB LEDs need electronic circuits to control. wholeenvironments. Single chip Power LEDs and Multi chip Power LEDs Structure Structure: materials The semiconductor gallium arsenide (GaAs) was used in early LEDs. Later, GaP was used as the