Studying the reaction process of synthesizing semiconductor cadmium selenide - sulfide core/shell alloys nanoparticles using cadmium oxide as precursors.  The precursor binds to form a selenide core sulfide shell this synthesis is determined by how unstable the molecular selenide/sulfide precursor molecule is to the phosphine bond. A less stable core has a faster rate of nucleation.  A shell on the other hand, is formed from a more stable phosphine bond and has a slower rate of nucleation and has a lower reactivity.  The goal of this project is to reserve the product of a selenide core and sulfide shell and synthesize a sulfide core and selenide shell.  Possible methods: decreasing the stability of molecular sulfide or increase the stability of the molecular selenide.  Nitrating triphenylphosphine/oxide will make the molecular sulfide have a higher reactivity than molecular selenide allowing the sulfide to react first and produce a selenide core.

Synthesis of sulfide and selenide precursors to tune the composition, morphology, and properties of CdS_<sub>1-x</sub> Se_<sub>x</sub> core/shell nanocrystals

245th National Meeting (2013)

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Synthesis of sulfide and selenide precursors to tune the composition, morphology, and properties of CdS_1-x Se_x core/shell nanocrystals

Synthesis of sulfide and selenide precursors to tune the composition, morphology, and properties of CdS1-x Sex core/shell nanocrystals