Cambridge LED new technology can reduce household electricity

According to the engineering and Physical Sciences Committee (EngineeringandPhysicalScienceCouncil), University of Cambridge (CambridgeUniversity) Gan (GalliumNitrideGaN) research center of a light emitting diode (LED) of the new method, the cost is reduced by 90%, and is expected to reduce 75% household electricity in five years.

Since 90s, used in the manufacture of GaN LEDs are used for sapphire wafer expensive, Gan with significantly less consumption reached the bright light effect, but due to high manufacturing costs, not widely used in home and office.

The new method uses silicon substrate to fabricate gallium nitride, greatly reducing the cost. This method can be widely used in home and office lighting for five years.

The results show that the new led led to the UK's lighting power consumption dropped from 20% to 5%, equivalent to the closure of 8 existing power stations. Each new diode can emit light for 100000 hours, with an average life of up to 60 years. It does not contain mercury, so it is more environmentally friendly, as well as the advantages of quick start and adjustable brightness.

The project's chief scientist Colin Humphries (ColinHumphreys), said: 'new GaN LED is a light of hope. We will soon be able to produce efficient, low-cost white light-emitting diodes, to replace the traditional use of Low Energy bulbs now. It is not only more environmentally friendly, but also save electricity.

GaN based light emitting diode applied to some landmarks such as the Buckingham Palace and the Severn bridge (SevernBridge) can also be used for lighting, flashlight, mobile phone, torch, bike, bus and train, and aircraft interior lighting.

Another study at the University of Cambridge, using gallium nitride to simulate sunlight, to help the UK three million 'seasonal affective disorder' patients.

Gallium nitride lighting can also be used for the development of water purification and disease control in developing countries, positioning cancer mass spread and against bacteria.