+ LED lighting technology, environmentally friendly

Nobel Prize in Physics 2014 was announced on 07/10/2014, honoring the inventor of light emitting diodes LED (Light Emitting Diode) blue, capable of generating white light source and light energy saving more . Scientists Isamu Akasaki was named, Shuji Nakamura Hiroshi Amano and Japanese. 

LED - lighting technology environmentally friendly 

By using LEDs, the influence of the illumination source pollutants may be limited. Artwork 
LED stands for Light Emitting Diode's, which means light emitting diodes capable of emitting light or infrared rays, ultraviolet. Like diodes, LEDs are made from a p-type compound semiconductor with an n-type semiconductor. 

Scientists create LED in the early last century. However, in the 50s of last century, the first new infrared LED is actualized. 

The first LED light by Nick Holonyak, Jr. Discovered in 1962 So far, Holonyak is still regarded as the father of the LED. Ten years later, George Craford invented the first yellow LED and improved the brightness up to 10 times more for the red LED and orange LED TCB. 

While the LED is red and then green LED was created over a long period of time creating a blue LED is still a challenge for scientists of the time. 

It took nearly 30 years, we overcome this challenge. That was in 1994, when Shuji Nakamura, Nichia company working in Japan for the first time created a blue LED. 

Time immemorial, humans have used fire to create light. From the 19th century, the method used gas lamps became popular and then the incandescent light bulb by Thomas Edison. Today, we have fluorescent lamps and compact fluorescent lamps (CFL). These technologies help more people get access to more light, while can save more energy than before. 

LED is considered to be a generation of new lighting technologies. Compared with CFLs and incandescent bulbs, LED lights are more effective in turn 4 times and 15 times. Compared to fluorescent bulbs, which consume less energy and do not contain toxic mercury. 

Not only energy savings, longer lamp life is extended, roughly 30 times more than incandescent bulbs. Many LED bulbs have a lifespan of 25,000 hours, equivalent to 17 years ie if used for 4 hours per day lighting. 

According to the researchers, the active lighting energy consumption, estimated at 17% of electricity consumed in the USA alone. Energy saving benefits that LED lighting can bring great especially in developing countries. 

By using LEDs, the influence of the illumination source pollutants may be limited. Due to the low power requirements, LEDs can be supported by solar power cheap. In the future, if the cost of increasingly cheaper, they can replace fluorescent lamps or incandescent lamps which are widely used in Europe or America. 

Government policy United States find new technologies to reduce 50% of 2025 electricity consumption for lighting. Using LED lights are considered the most reliable means to achieve that goal. The technology group American microelectronics research is urgently LED innovation, and has achieved encouraging results, luminous intensity of the LED lights used to double every 18 month period, to believe idea is to use LED lights bright enough in 2010 to replace the fluorescent lamps. 

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