9Park W J, Song Y H, Moon J W, Kang S M, Yoon D H. Synthesis and luminescent properties of Eu^2 + doped nitrogen - rich Ca - α-SiA1ON phosphor for white light - emitting diodes [ J]. Solid State Sci. ,2010,12:1853 - 1856.
10Uchida Y, Taguchi T. Lighting theory and luminous characteris- tics of white light - emitting diodes [ J ]. Opt. Eng. , 2005,44 : 124003( 1 -9).
