DOI: https://doi.org/10.29363/nanoge.incnc.2021.056
Publication date: 8th June 2021
The synthesis of monodisperse colloidal nanocrystals (NCs) with controlled composition, size, and shape provides ideal building blocks for assembling new thin films and devices. These monodisperse colloidal NCs act as "artificial atoms" with tunable electronic, optical, magnetic properties that allow the development of a new periodic table for design at the Mesoscale. In this talk, I will briefly outline the current state of the art in synthesis, purification, and integration of single-phase NCs and core-shell (heterostructures) NCs emphasizing the design of semiconductor building blocks with tunable shapes (spheres, roads, cubes, discs, octahedra, and heterodimers, etc. I will then share how these tailored NCs can be directed to assemble into single-component, binary, ternary NC superlattices providing a scalable route to the production of multifunctional thin films. The modular assembly of these NCs allows the desirable features of the underlying quantum phenomena to be enhanced even as the interactions between the NCs allow new delocalized properties to emerge. Synergies in the electronic and optical coupling between NCs will be emphasized, along with the potential of complimentary assembly for systematic chemical transformations. I will share specific case studies in catalysis in supported films, and I will also share progress in microfluidic superparticle assembly approaches. Creating mesoscale structures that span 100s of nanometer to 10s of microns as the following scale of building units.
The authors acknowleged the support of the plasmonic and quantum confined semiconductor nanocrystal synthesis NSF MRSEC under Award No. DMR-1720530. The authors ae also grateful for the support of self-assembly and microfluid studies under the support of Office of Naval Research Multidisciplinary University Research Initiative Award ONR N00014-18-1-2497 and the support of the the Catalysis Center for Energy Innovation, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award No. DE-SC0001004.
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