According to the news of the Engineering Physics Scientific Committee (EngineeringandPhysicalScienceCouncil), the center of the University of Cambridge
(CambridgeUniversity) GaN (GalliumNitrideGaN) developed the new method of a light emitting diode (LED), and its cost reduced by 90% and is expected within
five years household electricity bill by 75%.
Since the 1990s, GaN is used to manufacture light-emitting diodes are expensive sapphire, gallium nitride can be used very little power to achieve a bright
glow, but due to high manufacturing costs, is not widely used in homes and office space.
The new method uses a silicon chip manufacturing gallium nitride, and greatly reduced costs. This cheap method of manufacturing light-emitting diodes is
expected within five years, is widely used in home and office lighting.
The results show that the new light-emitting diodes will enable the UK lighting electricity consumption dropped from 20% to 5%, equivalent to the closure of
eight existing power stations. Each new diode light-emitting 100,000 hour average life of 60 years. It does not contain mercury, and therefore more
environmentally friendly, as well as rapid start, brightness adjustment, etc..
The project's chief scientist Colin Hengforuisi, (ColinHumphreys) said: 'The new GaN-based light-emitting diode is a glimmer of hope. We can quickly
manufacture a highly efficient, low cost white LEDs to replace traditional low energy light bulbs are used. It is not only more environmentally friendly, but
also to save electricity. '
GaN light-emitting diodes used in a number of landmark buildings, such as Buckingham Palace and the Severn Bridge (SevernBridge) lighting, flash, mobile
phones, torches, bicycle, bus, train and aircraft interior lighting can also be used.
University of Cambridge, conducted another study, GaN simulated sunlight in order to help the British three million 'seasonal affective disorder' patients.
UV GaN lighting can also be used for water purification and disease control in developing countries, the positioning cancer tumor proliferation and the fight
against germs.
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