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New LED technology to light future
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Written by Gizmo   
Saturday, 20 January 2007 17:30

Cyberlux could be leading (and lighting) the way to a brighter and more energy efficient future , if they have their way.  The company have developed a technology that allows making white LEDs that can be used to make light bulbs more cheaply and efficiently than tech in use today.

What's so special about that?  Well, current white LED tech uses a blue-light LED.  The blue light strikes a phosphor on a plate placed very close to the LED.  This causes the phosphor to fluoresce, emitting white light.  The problem is that the placement of the phosphor must be very precise, making the manufacture of the LED costly.  Current LED-based white lights are many times more expensive than standard incandescent bulbs, and even several times more expenses than fluorescent light bulbs.

The new technology will replace the phosphor with a polymer sheet that is more efficient.  Conventional incandescent light bulbs are only about 5% efficient at converting energy to light (the rest is wasted as heat).  Fluorescents are upwards of about 5 times more efficient, meaning that something on the order of about 25% of their energy is converted to light.  The new LED technology would enable the manufacture of devices that could be as much as 30% more efficient than fluorescent bulbs, and last as much as 75,000 hours (about 10 times the life of a fluorescent bulb, and about 50 times the life of an incandescent).

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