Multi-layered semiconductor nanoparticles having a very narrow grain-size
distribution and exhibiting a spectrum having a narrow wavelength-width peak are
prepared by a manufacturing method combining a monodisperse semiconductor nanoparticle
manufacturing method and a multi-layer semiconductor nanoparticle preparation method.
The nature of a solution of monodisperse semiconductor nanoparticles that is stabilized
by a surface stabilizer is transformed between hydrophilic and lipophilic by substituting
the surface stabilizer. The stabilized semiconductor nanoparticles are then shifted
between an aqueous layer and an organic layer. The semiconductor nanoparticles
are coated with multiple layers in the organic layer, and the organic layer is
drawn off to recover the semiconductor nanoparticles therefrom.
