Indeed, this is old, I remember reading about it when I was doing research on quantum dots when I was still doing physics at university. I wonder if it's actually been used in practice though, as use of "fake white" LEDs is still abundant. Was it too expensive? Inefficient in power or production?
A lot of cool new breakthroughs seem to come out and then nothing is ever heard of them again, and I often find myself wondering "whatever happened to that?"
I think this happens to everyone. How about a website that tracks down old (2 years or more) "Breakthrough technology" articles and gives updates on what's going on?
I know I'd browse such a site. actually isn't this what worldchanging.com should be doing?
(I hope it bypasses their abomination of a web interface, but if not you'll have to learn to navigate to the main part of the article.)