(YAG) yellow phosphor coating on blue LED chip can be excited by blue light

glow in the dark materialCoated on a blue LED chip can be excited by blue light (YAG) phosphor yellow, blue and yellow phosphor chip emits white light emitted by the complementary formation. The technology is monopolized Japanese Nichia Corporation, and a principle of the shortcomings of this approach is that the phosphor Ce3 + ion emission spectrum does not have a continuous spectrum characteristics, poor color, it is difficult to meet the requirements of low color temperature of lighting, while the luminous efficiency is not high enough, through the development of new phosphors to improve efficiency.Photoluminescent Rigid Sheet