Patent ID: 8884513
Filing Date: 2014-11-11
Classification: C04B,C09K,G02F,H01L,H05B,Y02B

Abstract:
1. A red fluorescent material containing an element A, europium (Eu), silicon (Si), carbon (C), oxygen (O), and nitrogen (N), at an atomic ratio of the following composition formula (1): wherein, in a PLE (Photo Luminescence Excitation) spectrum, a relative value of a luminescence intensity of 550 nm excitation wavelength when a luminescence intensity of 400 nm excitation wavelength is defined as 1 is not more than 0.85 and not less than 0.46, wherein the element A is at least one selected from the group consisting of magnesium (Mg), calcium (Ca), strontium (Sr), and barium (Ba), and m, x, y, and n satisfy 3<m<5, 0<x<1, 0<y<9, and 0<n<10, respectively.