If anyone is looking for some "LED phosphor" to play around with, I asked a friend/Ph.D. chemist to sell some on ebay and he listed it last night:
I bought some, will report back later. I like yellow :) - take a look at my 2 watt 577 nm laser here: Coherent 577 nm 2 Watt Yellow Micro-X OPSL laser - Lasers - Laser Discourse