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Technology Stocks : White light from LED -- Ignore unavailable to you. Want to Upgrade?


To: John Finley who wrote (269)5/8/2000 11:29:00 PM
From: kinkblot  Read Replies (2) | Respond to of 565
 
The two-flow they kept as internal knowhow, undisclosed, according to the 4/20 EE Times interview with Nakamura. Now he's over here, walking around with the blueprint in his head. I assume he's still restricted from disclosing it. It's interesting that he and DenBaars have ordered a machine from EMCORE for their GaN device research at UCSB. If their (his) reactor design really is as superior as Nakamura claims, Nichia must be a little concerned about this:

A formal research collaboration has been established between EMCORE and Professors Nakamura and DenBaars. This collaboration will provide a feedback loop for UCSB to communicate tool performance data to EMCORE that will enable EMCORE to integrate design and performance improvements into their MOCVD tool designs.

{from the EMCORE press release}

WT



To: John Finley who wrote (269)5/11/2000 5:05:00 AM
From: unclewest  Read Replies (1) | Respond to of 565
 
GaN on sapphire ain't dead yet. Nichia seems to be doing OK with it. I'm not aware of any GaN LEDs that are brighter than Nichia's

the problem with GaN on sapphire for white is...
too expensive...3x SiC
the leads are on one end....requires special packaging
much larger than SiC

the good is they can be brighter...however the very high bright market is very small...at least so far.

note that cree's recent acquisition of nitres...has them saying they now have the brightest at the lowest price.

japanese companies are famous for supporting each other....interesting that cree recently got 2 design wins in nichia's backyard...the new sony playstation and panasonic cell phone use cree leds. nokia's latest cell phone uses cree leds also.