Discovery Promises Inexpensive LED Lights

Take an LED that produces intense, blue light. Coat it with a thin layer of special microscopic beads called quantum dots. And you have what could become the successor to the venerable light bulb.  Chemists at Vanderbilt University have discovered a way to make quantum dots spontaneously produce broad-spectrum white light.  In recent years LED's have begun to appear on the market that replace conventional light bulbs, but they have been quite expensive.  They are more energy efficient than incandescent bulbs, last much longer and are very tough.  An accidental discovery could transform lighting production into a primarily chemical process with accompanying economies.  The easily produced quantum dots are mixed with a coating material, polyurethane, in the lab experiment, and coated on an inexpensive LED to make it a full spectrum light source. 

And so esoteric quantum dots could become part of a mainstream commodity.

Resource: "Quantum dots that produce white light could be the light bulb's successor", PhysOrg.com, October 20, 2005

More blogs about LEDs, quanturm dots, energy.

Comments

[JesseJenkins]

Interesting timing. I just wrote a post on the energy applications of quanutm dots over on WattHead in which I wrote about their potential to applications in photovoltiacs. It seems they can also be used to create highly efficienct PVs potentially converting as much as 65% of incoming solar radiation into electricity.

Their applications to LEDs are also very promising. Sounds like this development of nanotechnology will have a bright future (pun intended) in energy applications.

[passing]

this company has some comparative data about LED lights

[Ace Lamps]

If this method works, this could be a major breakthrough in LED lighting. the only reason LED's havent kicked off in the public market is due to the price of the bulbs. Government builldings and major companies can afford the initial high price, but this is not the case for the general public wanting to light their homes. If a cheap bulb can be produced, then it will make LED lighting available to all.

[husky air compressor]

I'm working on a green house project. I'm really interested by this Discovery Promises Inexpensive LED Lights and I really would like to know if it's reliable for single housing application.
thanks a lot!
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[Jeff Ransome]

LED's should be used by all sectors, the prices have come down with energy saving costs now justifying the purchase cost.

[iPhone 4 ケース]

Their applications to LEDs are also very promising. Sounds like this development of nanotechnology will have a bright future (pun intended) in energy applications.