Advanced Materials · 2001 · 81 citations · 0 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsNanomaterialsNanotechnologyNanostructured Electronic MaterialsOptical Properties Of SemiconductorsQuantum ConfinementSemiconductor NanomaterialsSemiconductor PhysicsSemiconductor Thin FilmsLead SulfidesNanostructured SemiconductorsOptical AbsorptionOptical Absorption SpectraOptical PropertiesPhotoluminescenceQuantum Confinement EffectsSemiconductor Nanostructures
The optical properties of lead sulfide semiconducting nanoparticulate thin films with pancake-like structures are controlled by the lowest dimension of the particles, which is a consequence of 1D quantum confinement. Optical absorption and photoluminescence spectra of the nanoparticles (see Figure) reveal that their bandgap does not change with temperature in contrast to bulk lead sulfide.