Main reasons causing rapid decay of white LED
fecha:2011-05-21 09:56
estado:para resolver
pregunta:admin
well as isotropic scattering of light, resulting phosphor layer near the short wavelength radiation and a high concentration of heat, so near the phosphor layer of epoxy resin is more prone to yellowing. This will affect the attenuation of white LED shown in Figure 2.
Figure 2, the isotropic scattering of light
This experiment was also done: use the same chip with different blue phosphors. Selection of phosphor excitation peak wavelength of 460 5nm, the rare-earth-doped lead emissi
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