affecting led efficiency

The size of led color-temperature value is one of those things. It directly influences lighting efficiency .so the led color-temperature had important influence on it.
and analyze its Photoelectric current spectro-photoelectrical sensitivity curve to get the parameters that impact on the efficiency of the led color-temperature.

density(mw)

wavelength（nm)

It is easy to see the conclusions described in the photo as above.
(the light efficiency is of low efficiency in high led color-temperature,for example 5000k)
(the light efficiency is of higher efficiency in low led color-temperature,for example 3000k)
So this is one of the reasons that affecting lighting efficiency.