Illustrated is a Lead Selenide (PbSe) self-assembled nested structure, giving it enhanced properties due to the quantum effect of the structure. PbSe is one of the most important thermoelectric and photovoltaic materials. The sample is produced by solvothermal synthesis while controlling the surfactant. This structure, about 500 nm in length, is basically made up of about five small regular cubes, which have been bonded together as a whole body by a ligand. The interesting thing is that the surfactant “ate” off certain segments, leaving a unique structure behind.