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8306663 
Journal Article 
Semiconductor light sources - The revolution in optoelectronics 
Ryzhikov, IV; Rudenko, NN; Silakova, TT 
2008 
51 
4 
224-231 
English 
There are two main types of light sources, namely, incandescent lamps and gas-discharge lamps and the former with power of 15-300W is the most commonly used. Luminescent lamps, applied for lighting of public and industrial premises are not widely used in lighting living quarters caused by inadequately perceived by human eye and are also expensive. Nevertheless, these lamps has advantages such as high luminous efficiency and a long lifetime. Meanwhile, developed in the 1970-80s, light-emitting diodes (LED) had found wide use in low-power devices and instruments for indication, signaling, control, and display of information, suitable for both civil and special applications. LED has many advantages such as high lumen efficiency, reliability and long lifetime achievement hours, close to monochromatic emission, as well as, high resistance towards mechanical stresses and to the penetrating radiation. Currently, there different techniques in developing "white" color LED, including, mixing of light fluxes of the three LED radiating in the red, green, and blue; mixing blue emission of LED with emission of a broadband yellow-and-orange luminophor excited by the LED radiation; and lastly, mixing the emission of three luminophors excited by LED radiating in the UV band.