| abstract |
An object of the present invention is to provide a semiconductor nanoparticle which can have a low toxicity composition and can emit band edge light. The semiconductor nanoparticles include Ag, In, Mg, and S. The semiconductor nanoparticles have a Ag content of 1.4 mol% or more and 28 mol% or less and an In content of 5 mol% in the composition. % To 36% by mole, the S content is 46% to 57% by mole, the Mg content is 0.1% to 40% by mole, and the mole of Mg with respect to the total mole number of Ag and In. The ratio of numbers is 0.02 or more and 4 or less. [Selection diagram] FIG. |