LEDs 50% efficient?! was Re: alternatives to big oil and if they can be allowed to happen....

From: Michael M. Butler (butler@comp-lib.org)
Date: Thu Feb 03 2000 - 09:42:03 MST

Um, a 50% efficiency figure for LEDs sounds a bit on the high side. I'm
confident that the efficiency is high. Last I heard, the white light
ones are about to push the efficiency of fluorescents/gas-discharge,
somewhere around 18%(?), which is pretty darned cool. Ultraefficient red
LEDs might be quite a bit higher, like 30-35%.

Got a source for that 50%+ efficiency figure? (Robert, I think)?


> > (c) That there will be no improvements in energy efficiencies
> > (automobiles, electric lights, etc.) [LEDs for example
> > are 50%+ efficient, new electrodeless sodium vapor lamps
> > are 2-3x as efficient as incandescent.]

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