SEMICONDUCTOR NANO-PARTICLE FLUORESCENT BODY

PROBLEM TO BE SOLVED: To provide a core shell structure semiconductor nano-particle fluorescent body with high dispersibility, high light-emission efficiency and excellent reliability having a second shell as a relaxing layer for relaxing lattice inconsistency generated in the core shell structure semiconductor nano-particle, improving crystallinity of a crystal particle and capping a surface defect. SOLUTION: The semiconductor nano-particle fluorescent body is provided with a nano-particle core comprising a group 13 and group 15 semiconductor, a first shell for covering the nano-particle core, and the second shell for covering the first shell. In the semiconductor nano-particle fluorescent body, difference of a lattice constant of the nano-particle core and a lattice constant of the second shell is smaller than that of the lattice constant of the nano-particle core and a lattice constant of the first shell. Alternatively, the lattice constant of the first shell is smaller than the lattice constant of the nano-particle core and the lattice constant of the second shell is larger than the lattice constant of the nano-particle core. Alternatively, the lattice constant of the first shell is larger than the lattice constant of the nano-particle core and the lattice constant of the second shell is smaller than the lattice constant of the nano-particle core. COPYRIGHT: (C)2010,JPO&INPIT