| 摘要 |
Provided is a process for producing a red phosphor, said process achieving enhanced productivity. Also provided are: a red phosphor having excellent luminescence characteristics; and a white light source, a lighting system, and a liquid crystal display device, using the red phosphor. This process comprises: mixing an A-containing compound, a nitrogen-free europium source, a silicon-containing compound, an aluminum-containing compound and a carbon-containing reducing agent so as to form a mixture wherein the atomic ratio among A, europium (Eu), silicon (Si), aluminum (Al) and carbon (C) is a value represented by composition formula (1); firing the mixture; and pulverizing the fired mixture. (A m-x Eu x )Al y (Si 1-z C z ) 9 O n N [12+y-2(n-m)/3] (1) [wherein A is at least one element selected from among magnesium (Mg), calcium (Ca), strontium (Sr) and barium (Ba), and m, x, z and n satisfy the relationships: 3 < m < 5, 0 < x < 1, 0 ‰¦ y < 2, 0 < z < 1, and 0 < n < 10]. |
