COPPER INDIUM SULFIDE NANOPARTICLES AND A PREPARATION METHOD THEREOF

摘要

Related are a copper indium sulfide nanoparticles and a preparation method thereof. Copper salts, indium salts and alkane thiol are added to a non-polar organic solvent, and then are heated with stirring under inert gas atmosphere to dissolve until a dark red colloidal solution is obtained. The obtained colloidal solution is cooled to room temperature, and then a polar solvent is added. The copper indium sulfide semiconductor nanoparticles are obtained through centrifugal settling. The obtained copper indium sulfide semiconductor nanoparticles could be further washed and vacuum dried to give copper indium sulfide semiconductor nanoparticle powders. The obtained copper indium sulfide semiconductor nanoparticles have an average particle size of 2 to 10 nm and an emission spectrum of 600 to 800 nm in the near infrared region, quantum efficiency being close to 10%. The yield of the present method is up to 90%.