Semiconductor nanoparticle, dispersion liquid, film, and method of producing semiconductor nanoparticle

A semiconductor nanoparticle,

• wherein oxygen, zinc, and sulfur are detected by X-ray photoelectron spectroscopy analysis, and
• a peak (ICH3) which is derived from a hydrocarbon group and present in a range of 2800 cm−1 to 3000 cm−1 and a peak (ICOO) which is derived from COO− and present in a range of 1400 cm−1 to 1600 cm−1 are detected by Fourier transform infrared spectroscopy analysis,
• wherein a molar ratio of oxygen to sulfur which is acquired by X-ray photoelectron spectroscopy analysis satisfies Formula (1), and
• a molar ratio of oxygen to zinc which is acquired by X-ray photoelectron spectroscopy analysis satisfies Formula (2),
• 0.20≤O/S≤0.80 (1)
• 0.30≤O/Zn≤1.10 (2)
• wherein two or more kinds of ligands are coordinated,
• wherein both of a ligand A which is represented by Formula (A) and contains a carboxyl group and a ligand B which is represented by Formula (B) and contains a mercapto group are coordinated,
• R1—COOH (A)
• R2—SH (B)
• where R1 and R2 in Formulae (A) and (B) each independently represent an organic group, and
• wherein both of R1 and R2 in Formulae (A) and (B) represent a linear aliphatic hydrocarbon group.