Most Efficient Light Source??
- From: "manofsan@xxxxxxxxx" <manofsan@xxxxxxxxx>
- Date: 18 Nov 2005 17:08:40 -0800
I'd read that incandescent bulbs produce about 13 lumens per watt,
while halogen lights produce about 90 lumens per watt. LED lamps have
making inroads with their approx 70 lumens per watt. But recently some
Japanese researcher has claimed to produce LEDs with double the normal
efficiency, at 130 lumens per watt:
http://www.theinquirer.net/?article=27731
And now recent experimental results show that nanotubes can emit light
1000 times more efficiently than an LED:
http://physicsweb.org/articles/news/9/11/12/1
So could this be scaled up to make large lamps for practical lighting?
We've all heard about how strained semiconductor materials like
strained silicon or strained silicon-germanium can result in charge
carriers moving more easily through the material. Is this nanotube
lattice strain differential between the suspended and supported
sections using some similar effect to produce light more efficiently?
How can what was observed in the nanotubes be exploited for large-scale
lighting applications?
.
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