Proceedings of nanoGe September Meeting 2017 (NFM17)
Publication date: 20th June 2016
Two-dimensional (2D) single-crystalline semiconductor nanosheets have drawn growing interest within nanoscience research, because may offer superior charge transport compared to assemblies of nanocrystals or nanowires, while still exhibiting size-dependent physical phenomena. Lead chalcogenides (IV-VI) are attractive materials for optoelectronic applications in the near-infrared region. However, only a few examples of lead chalcogenide nansheets have been reported. We will present new methods for the synthesis and surface modification of colloidal PbS nanosheets. New syntheses produce PbS NSs with tunable thickness and shape. Inorganic surface passivation is an effective method to reduce surface trap states in colloidal nanostructures. We show that PbS/CdS core/shell nanosheets can be synthesized. Structural and chemical characterization confirms the presence of the CdS shell, and the optical properties will be reported.
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