A semiconductor nanoparticle for a color conversion member of a display device includes: a central portion including at least one of i) InP, ii) a ternary compound consisting of indium, phosphorus, and one element of Groups I-VII, and iii) InP doped with at least one transition metal of Groups I-VII; an inner portion proximate to the central portion and including a phosphide of at least one of boron, aluminum, and gallium; a middle portion proximate to the inner portion and including at least one of ZnSe and ZnSexS1-x; and an outer portion proximate to the middle portion and including one or more compounds of Groups II-VI, wherein x is 0