Researchers Achieve 230% Efficiency From LED's

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Researchers Achieve 230% Efficiency From LED's

Post by SquidInk » 03-09-2012 10:47 AM
( -- For the first time, researchers have demonstrated that an LED can emit more optical power than the electrical power it consumes. Although scientifically intriguing, the results won’t immediately result in ultra-efficient commercial LEDs since the demonstration works only for LEDs with very low input power that produce very small amounts of light.


As the researchers explain in their study, the key to achieving a power conversion efficiency above 100%, i.e., “unity efficiency,” is to greatly decrease the applied voltage. According to their calculations, as the voltage is halved, the input power is decreased by a factor of 4, while the emitted light power scales linearly with voltage so that it’s also only halved. In other words, an LED’s efficiency increases as its output power decreases. (The inverse of this relationship - that LED efficiency decreases as its output power increases - is one of the biggest hurdles in designing bright, efficient LED lights.)

Now, let's use the photons to do something nifty.
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Post by Fan » 06-07-2012 11:14 AM

There are decent LED grow lamps now (which is a revolution in indoor growing).

I was just talking last night about how cool LED technology is. The newest flashlights are using amazingly high output LEDs, getting up to 1000 lumens or even more.

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