white leds have plenty of green light. violet leds are very inefficient and don't last long. you would be better off supplementing 3000k with 660nm diodes and using these for violet, bright blue and UV https://www.ebay.com/itm/T5-BULBS-T5HO-HIGH-OUTPUT-FLUORESCENT-LAMP-2-4-ft-GROW-BLOOM-UV-1-4-8-25-packs/160895821950?ssPageName=STRK:MEBIDX:IT&var=460130683601&_trksid=p2057872.m2749.l2649. UVA plus bulbs
I added Deep Red 650nm, Royal Blue 460nm, and UVA 385nm. I tried 365nm but not as good as the 385nm. UVA 385nm adds color flavor, etc. I use thbe DR and RB along with my Samsung white light; 3000k and 5000k board equal mix two channels, 192 diodes each channel.
Lumileds luxeon SunPlus 20 makes a lime green for that
Violet leds are actually getting better rather quickly. The package material in the 5730 is the problem. I think they will have a 3030 that fixes these problems shortly if not already. I'm not advocating to use a ton of them. Maybe 5%. The phosphorous mixture specifically for the longer wavelengths. This way you still achieve the efficacy of the blue pumped white and just fill in the gaps with the violet pumped leds. We'll be building a few boards for testing in a month or two and I will of course share the results.
I can only find data on white 3030smds.are these available in 470, 430 and 380 NM?where can I find a data sheet on them? who sells them? a few years ago TRW was working on a white diode using a UVA diode to pump a tri-phosphor blend that that provide full spectrum white light from 400-680nm. these were made for photographic work and had a very high CRI but had an efficiency of only 20%. until UV diodes can exceed 30% efficiency at a reasonable cost T5s will remain a more cost effective way to cover this portion of the spectrum.
Yuji