As far as I understand, white LEDs and CFLs both use phosphor mixtures to convert part of their primary emission spectrum to longer wavelengths. What puzzles me is the difference in the resulting spectra.
I would expect these to be similar as the spectra are mainly phosphor dependent, but in reality they differ significantly between both lamp types:
I understand the stronger blue peak in the LED spectrum, what is just the primary emission shining through the phosphor.
But the CFL lamps show characteristic peaks, as I know them from typical X-Ray phosphors like GOS:Tb - and the LED spectrum is much smoother.
The question, straight to the point: why are these spectra so different?
And in more detail: Does this mean, that LEDs can use different phosphors than CFL lamps? If yes, why are these not available for CFL - are they too instable in contact with the plasma? Why do these phosphors have broader emission peaks? Are these organic compounds?
Thanks in advance.