On Wednesday, November 25, 2020 at 12:38:35 PM UTC-5, Alfred Molon wrote:
In article ,
says...

On 25/11/2020 4:41 pm, -hh wrote:
On Tuesday, November 24, 2020 at 4:42:16 PM UTC-5, geoff wrote:
Sounds promising.

https://tinyurl.com/yxt5j7l7

It will find a niche somewhere, but don?t expect it to show up in consumer
products for quite awhile. For example, GaAs and GaN have both been
around for over a decade and their applications are still quite spotty:
compared to classical silicone, the wafers are smaller & more expensive,
plus you can easily blow through a couple Million just to optimize one?s
manufacturing to get yields up.

GaAs LEDs have existed for nearly 60 years.

But Gallium is a quite rare element (especially if compared to
silicon). Probably also much more expensive.

He’s missing the point, which is just because a material exists
doesn’t mean that it will “take over” the entire industry...and his
own “GaAs LED” claim confirms this perspective.

FWIW, one of the problems that GaAs has had which have hindered
semiconductor designs is the medium still has uniformity problems
with voids..it progressively trashes the wafer yield as one’s product
size increases. GaN is better in this regards, but its wafers are even
more expensive...it was used a few years back in a ‘DARPA Challenge’
program... think it was for a 10Gbps+ wireless link? Guy I knew who
was working on it does of a heart attack, so I’ve lost track...


-hh