Patent ID: 8153022

Claim:
A semiconductor phosphor nanoparticle comprising: a nanoparticle core made of a group 13-group 15 semiconductor; a shell layer coating said nanoparticle core; and a metal-containing modified organic compound and a modified organic compound binding to a surface of said shell layer, wherein said metal-containing modified organic compound is a member selected from the group consisting of gallium acetyl acetonate, indium acetyl acetonate, gallium stearate, indium stearate, zinc stearate, gallium palmitate, indium palmitate, zinc palmitate, gallium myristate, indium myristate, zinc myristate, gallium laurate, indium laurate, zinc laurate, gallium undecylenate, indium undecylenate, zinc undecylenate, gallium stearyl sulfate, indium stearyl sulfate, gallium palmityl sulfate, indium palmityl sulfate, zinc palmityl sulfate, zinc stearyl sulfate, gallium myristyl sulfate, indium myristyl sulfate, zinc myristyl sulfate, gallium lauryl sulfate, indium lauryl sulfate, zinc lauryl sulfate, gallium stearyl phosphate, indium stearyl phosphate, zinc stearyl phosphate, gallium palmityl phosphate, indium palmityl phosphate, zinc palmityl phosphate, gallium myristyl phosphate, indium myristyl phosphate, zinc myristyl phosphate, gallium lauryl phosphate, indium lauryl phosphate, and zinc lauryl phosphate.