Nitride phosphor and production process thereof, and light emitting device
First Claim
1. A process for production of a nitride phosphor which contains at least nitrogen, and absorbs at least a portion of light having a first luminescence spectrum and emits light having a second luminescence spectrum which is different from the above-mentioned first luminescence spectrum;
- is characterized by having a step of firing in ammonia atmosphere.
0 Assignments
0 Petitions
Accused Products
Abstract
To provide a phosphor containing a comparatively much red component and having high light emitting efficiency, high brightness and further high durability, the nitride phosphor is represented by the general formula LXMYN((2/3)X+(4/3)Y):R or LXMYOZN((2/3)X+(4/3)Y−(2/3)Z):R (wherein L is at least one or more selected from the Group II Elements consisting of Mg, Ca, Sr, Ba and Zn, M is at least one or more selected from the Group IV Elements in which Si is essential among C, Si and Ge, and R is at least one or more selected from the rare earth elements in which Eu is essential among Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er and Lu.); contains the another elements.
-
Citations
14 Claims
-
1. A process for production of a nitride phosphor which contains at least nitrogen, and absorbs at least a portion of light having a first luminescence spectrum and emits light having a second luminescence spectrum which is different from the above-mentioned first luminescence spectrum;
- is characterized by having a step of firing in ammonia atmosphere.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
14. A light emitting device comprising a light emitting device which has at least a semiconductor light emitting element which emits light of a first luminescence spectrum, and a nitride phosphor which contains at least nitrogen, and absorbs at least a portion of light of said first luminescence spectrum and emits light of a second luminescence spectrum which is different from said first luminescence spectrum;
- said nitride phosphor having been fired in an ammonia atmosphere.
Specification