The New Technology Allows LED Brighter Adaptable

The LED is a LED lighting Ⅲ - Ⅳ made ​​compounds, such as gallium arsenide , gallium phosphide , gallium arsenide phosphide and other semiconductor , which is a semiconductor chip as the use of solid fat light materials. Rare metal gallium in the modern semiconductor industry widely used, mainly in the compound gallium arsenide occurs , accounting for about 80% of the total gallium applications.

According to physicist organizational networks reported on March 20 , scientists at North Carolina State University has developed a new technology that can significantly enhance the light-emitting diode without increasing the case with electricity (LED) brightness. At the same time , with a special coating materials , this new LED and LED products are more stable compared to the ordinary , and adaptable. Related papers published online in the internationally renowned chemistry journal " Langmuir (Langmuir)" on .

First author , North Carolina State University , Dr. Stuart Wilkins said they are on polar GaN semiconductor by applying a coating of a phosphate group from the group way to achieve this purpose.

The researchers first used by multi-layer self-assembly technique to produce nitrogen and gallium gallium nitride . And then increased phosphorus molecules containing an organic acid group , and the upper surface of the GaN material is coated . The gallium nitride semiconductor LED luminous efficiency improved , phosphate -based material is to ensure the stability of gallium nitride , it is not easy to react with substances in the environment , which is reducing may be dissolved in the solution .

"Improving the stability of gallium nitride is very important. " Wilkins said," because it can create the conditions for a new technology coming in the biomedical field . For example, the implantable sensor. "

It is understood that, compared with the common market silicon semiconductor LED , a gallium nitride semiconductor light output can be increased . If the same power consumption , the silicon semiconductor LED luminous flux can reach 1000 lumens, gallium nitride semiconductor LED luminous flux will be able to reach more than 2000 lumens . Therefore, based on higher gallium nitride semiconductor LED luminous efficiency , more energy efficient. In addition, compared with the silicon semiconductor LED, gallium nitride semiconductor LED small size, light weight , easier to achieve integration.


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