HIGHLY SATURATED RED LIGHT EMITTING Mn(IV)-ACTIVATED FLUORESCENT AND ITS MANUFACTURING PROCESS

摘要

PROBLEM TO BE SOLVED: To provide a light emitting device having a fluorescent composition radiatively combined with a semiconductor light source emitting a radiation of approximately 250-500 nm.;SOLUTION: The fluorescent composition of the light emitting device is selected from among the group consisting of Mg₁₄(Ga_(5-a)Mn_a)O₂₄, Sr(Ge_(4-b)Mn_b)O₉, Mg₂(Ti_(1-c)Mn_c)O₄, Zn₂(Ti_(1-d)Mn_d)O₄, SrMg(Al_(10-e)Mn_e)O₁₇ and Y₃(Ga_(5-f)Mn_f)O₁₂, wherein a is 0.05-1; b is 0.25-2; c and d are each 0.05-2; and e and f are each 0.05-1.5. The semiconductor light source of the light emitting device is a light emitting diode or the like containing nitrogen.;COPYRIGHT: (C)2008,JPO&INPIT