Preparation of metal chalcogenide dispersions
   
   

Optionally doped nanoparticle dispersions of metal chalcogenides are prepared by a precipitation step in aqueous medium, followed by a diafiltration or ultrafiltration step in the presence of a compound capable of preventing agglomeration of said metal chalcogenide nanoparticles.

 
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> Method of manufacturing a multi-layer semiconductor nanoparticle, and a multi-layer semiconductor nanoparticle manufactured by the method

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