Researchers tout advances in development of pure white LEDs

[trexy]

^^^
http://www.engadget.com/2007/09/26/researchers-tout-advances-in-development-of-pure-white-leds/

[Phatman]

That's cool, it's always good to see them experimenting with different componds to make different colors.  Now, if only they would figure what materials to combine to generate purple light.

[Sidneyious]

With lux led its a gas that when heated up produces the color. theres no gas that makes a purple or a yellow.

Read that from ultras faq on there site.

[Phatman]

it's not that there isn't a gas that makes that color, it's that they haven't discovered what gas makes that color.

[Sidneyious]

I dontknow ultras site said(last time I read it) that there wasent a gas.

[Phatman]

Right now, there isn't one that we know of.  The article states "new phosphor from semiconductor nanocrystals of cadmium sulfide mixed with manganese." which is used to make a cleaner white color.  There probably is some other combination out there that nobody has found yet that will produce a purple (or yellow) color.  I just hope that there is enough demand for new colors for somebody to dump some more money into research.  Unfortunately, while there might be a market for a pure white LED, the market for a Purple LED just isn't nearly as big.  No demand = no money in it = no research = no purple LEDs  :(

[Sidneyious]

Meh if I wanted a purple setup I would use do-clos setup that he has. It works and theres no science involved.