PHOSPHOR, PHOSPHOR-CONTAINING COMPOSITION AND LIGHT-EMITTING DEVICE USING THE PHOSPHOR, AND IMAGE DISPLAY DEVICE AND ILLUMINATING DEVICE USING THE LIGHT-EMITTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a red phosphor which is excellent in light-emission characteristics having a main light-emission wavelength in an excellent visibility region, and is also excellent in water resistance and durability over time.;SOLUTION: The phosphor contains a crystal phase showing a chemical composition represented by formula [1]: A_aB_bC_cD_dX_x:R, and has a light-emission peak in a wavelength range of 600 nm or more and 650 nm or less. In the formula [1], A element is one or more alkaline metal elements; B element is one or more alkaline earth metal elements; C element is one or more elements selected from a group consisting of a group 3 element and a group 13 element in the periodic table; D element is one or more elements selected from a group consisting of a group 4 element and a group 14 element in the periodic table; X element is one or more halogen elements containing at least F; R element is an activation element containing at least tetravalent Mn; and a, b, c, d and x represent a number satisfying 0.6≤a≤1.4, 0.6≤b≤1.4, 1.6≤a+b≤2.4, 0≤c≤0.4, 0.2≤d≤1.2, 0.6≤c+d≤1.6, and 6.5≤x≤7.5.;COPYRIGHT: (C)2015,JPO&INPIT