Semiconductor nanoparticle, production method thereof,electroluminescent device, production method thereof, and display including the same

A semiconductor nanoparticle,

• wherein the semiconductor nanoparticle is configured to emit light in response to an external stimulus,
• wherein the semiconductor nanoparticle includes a semiconductor nanocrystal comprising zinc and selenium;
• and a semiconductor nanocrystal layer comprising zinc and sulfur and on the semiconductor nanocrystal,
• wherein the semiconductor nanoparticle further comprises a first compound and a second compound,
• wherein the first compound includes a first functional group;
• and an aromatic hydrocarbon group or an aliphatic hydrocarbon group, the aliphatic hydrocarbon group having a terminal double bond,
• wherein the second compound includes a second functional group and an aliphatic hydrocarbon group,
• wherein the first functional group and the second functional group each independently comprise a carboxylic acid or an anion of the carboxylic acid,
• wherein in gas chromatography-mass spectrometry of the semiconductor nanoparticle, the first compound and the second compound exhibit a first peak and a second peak, respectively,
• a retention time of the second peak is greater than a retention time of the first peak, and
• a ratio of an area of the first peak to an area of the second peak is greater than or equal to about 0.1:1 and less than or equal to about 3:1.