Rare rare earth materials boost LED energy-efficient lighting

Recently, the Beijing Municipal Construction Committee, the City Planning Commission, the Municipal Committee jointly issued the "Beijing to promote, restrict and prohibit the use of building materials directory" list, incandescent lamp and a number of high pollution, high energy consumption and short life of building materials was included in the prohibited list, move to LED lighting industry is undoubtedly a positive. Similarly, over the same period in Guangxi Autonomous Region Housing Department also issued a "city photos and Construction Management program of work (2015-2016)", the program clearly states, the counties of urban lighting systems autonomous region incandescent phase-out of high pollution, to achieve energy-saving goals. This will associated rare metal indium, gallium, selenium and rare earth luminescent materials bring good.

LED containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N), indium (In), selenium (Se) and other compounds made of rare metals added to each different color LED light , such as gallium arsenide phosphide can be made of red, orange and yellow light; indium gallium nitride can be made blue and green, blue and near ultraviolet light; ZnSe blue light and so on.

As we all know, the principle is the current generation of heat incandescent filament (tungsten) through the filament temperature reaches 2000 degrees Celsius to produce a brightness. The higher the temperature of the filament, the brighter the light emitted. This requires the use of high-power filament and current, not only an increase in power consumption, but also a loss of tungsten. Fluorescent lamps and energy-saving lamps are lighting more common, but is relying on thermal energy fluorescent lamp mercury atoms release ultraviolet light from the argon gas provided by the light, it's power consumption is twice as incandescent bulbs. LED lights also known as a status LED, which is a solid state semiconductor devices, can be converted directly into electricity to light. LED's heart is the end of a semiconductor wafer, the wafer is attached to a bracket, one end is negative, and the other end connected to the positive power supply, so that the whole chip is epoxy encapsulated. LED lamps have a small size, low power consumption, long life, non-toxic environmental protection and many other advantages. With the rapid development of lighting technology, increased efforts to promote the use of LED, continue to break new optical design, electro-optical conversion efficiency, longer green, life, small size, low heat, high brightness, rugged, easy dimming, color variety of LED lighting will be the future trend.

In addition, the production of rare earth luminescent materials is the main raw material of energy efficient lamps. Rare earth phosphors include rare earth phosphor energy-saving lamps and special light rare earth phosphor. Rare earth luminescent materials to bring energy-saving light source, the color is good, long-life role. In various applications of rare earth luminescent materials, energy-saving lamps, the largest amount of rare earth phosphors. CFL is a new energy-efficient electric light, it is compared with ordinary incandescent lamp, energy-saving rate up to 80%, is considered ideal for today's green lighting engineering products. Faced with increasingly scarce global energy situation, many countries and regions, especially the EU and other developed countries are actively promoting energy-efficient lighting, phasing out high energy consumption. Since 2009, the EU announced that no sales of incandescent, Australia, Canada, Japan and other countries have introduced a program to promote energy-saving lamps to replace incandescent or CFL limit the use of the program schedule, the international market demand for energy-saving lamps increasingly urgent, the export market the potential is huge.


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