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A new kind of lightbulb

 
 
littlek
 
Reply Thu 13 Apr, 2006 06:34 pm
US scientists produced a new type of lightbulb recently. One that doesn't heat up.

BBC

Quote:
he organic light-emitting diode (OLED) emits a brilliant white light when attached to an electricity supply.

The material, described in the journal Nature, can be printed in wafer thin sheets that could transform walls, ceilings or even furniture into lights.

The OLEDs do not heat up like today's light bulbs and so are far more energy efficient and should last longer.

They also produce a light that is more akin to natural daylight than traditional bulbs.

"We're hoping that this will lead to significantly longer device lifetimes in addition to higher efficiency," said Professor Mark Thompson of the University of Southern California, one of the authors of the paper.
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Type: Discussion • Score: 1 • Views: 628 • Replies: 5
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boomerang
 
  1  
Reply Thu 13 Apr, 2006 06:38 pm
But how many blondes does it take to screw one in?
0 Replies
 
littlek
 
  1  
Reply Thu 13 Apr, 2006 06:40 pm
uhhhhmmm...... none if it hangs in a sheet on the wall.
0 Replies
 
roger
 
  1  
Reply Thu 13 Apr, 2006 06:42 pm
Blonde? Sheet?
0 Replies
 
boomerang
 
  1  
Reply Thu 13 Apr, 2006 06:42 pm
Well okay then. Mr. B can probably figure it out!

It is cool news. If it mimic sunlight those things should sell like hotcakes in Oregon. I would have paid any asking price for a wall of sunlight this winter.
0 Replies
 
littlek
 
  1  
Reply Thu 13 Apr, 2006 06:43 pm
From the same article:

Quote:
The new work exploits the properties of carbon-based polymers to produce the white light. These are already found in some mobile phone displays and MP3 players........

.......The researchers believe that eventually this material could be 100% efficient, meaning it could be capable of converting all of the electricity to light, without the heat loss associated with traditional bulbs.

The new material can also be printed onto glass or plastic and so in theory could create large areas of lighting, relatively cheaply.

Before this becomes a reality, the scientists need to work out a way to seal the OLEDs from moisture which can contaminate the sensitive material, causing it to no longer work.
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