WAVELENGTH CONVERTED LIGHT EMITTING DEVICE

摘要

In a method according to embodiments of the invention, for a predetermined amount of light produced by a light emitting diode and converted by a phosphor layer comprising a phosphor including a host material and a dopant, and for a predetermined maximum reduction in efficiency of the phosphor at increasing excitation density (i.e. maximum allowed droop), a maximum dopant concentration of the phosphor layer is selected.