Nano-/Microporous Materials: Crystalline Metal-Chalcogenide Superlattices
نویسندگان
چکیده
This article describes the recent research progress in the field of crystalline metal-chalcogenide superlatticescontaining tetrahedron-shaped nanoclusters as building units. With the development of new synthetic strategies and structuralconcepts, new clusters that are members of three series of tetrahedral clusters (i.e., supertetrahedral clusters, pentasupertetrahedralclusters, and capped supertetrahedral clusters) have been prepared and organized into extended frameworks with a variety oftopologies, such as single diamond, double diamond, ABW,CrB4, SOD, cubic C3N4, UCR-1, ICF-24, ICF-25, αand β-quartz,moganite, and boracite. These materials show rich compositional diversities with tunable optical properties, microporosity, andion-exchange properties, suggesting their potential applications in photocatalysis, fast-ion conductors, solar cells, etc.
منابع مشابه
Pushing up the size limit of chalcogenide supertetrahedral clusters: two- and three-dimensional photoluminescent open frameworks from (Cu(5)In(30)S(54))(13-) clusters.
Direct band gap copper indium chalcogenides are of great technological importance in part because of their high photovoltaic conversion efficiency. Covalent superlattices constructed from copper indium chalcogenide clusters are of particular interest because they may combine open framework architecture with semiconducting properties. Here two photoluminescent covalent superlattices built from c...
متن کاملTransport Properties of a Two-Dimensional PbSe Square Superstructure in an Electrolyte-Gated Transistor
Self-assembled nanocrystal solids show promise as a versatile platform for novel optoelectronic materials. Superlattices composed of a single layer of lead-chalcogenide and cadmium-chalcogenide nanocrystals with epitaxial connections between the nanocrystals, present outstanding questions to the community regarding their predicted band structure and electronic transport properties. However, the...
متن کاملMedeA: Atomistic Simulations for Designing and Testing Materials for Micro/Nano Electronics Systems
Results of atomic-scale simulations are presented including thermal conductivity, elastic moduli, diffusion, and adhesion. This type of simulations is most conveniently performed with the MedeA computational environment, which comprises experimental structure databases together with building tools to construct models of complex solids, surfaces, and interfaces for both crystalline and amorphous...
متن کاملNon-aqueous electrodeposition of functional semiconducting metal chalcogenides: Ge2Sb2Te5 phase change memory
We report a new method for electrodeposition of device-quality metal chalcogenide semiconductor thin films and nanostructures from a single, highly tuneable, non-aqueous electrolyte. This method opens up the prospect of electrochemical preparation of a wide range of functional semiconducting metal chalcogenide alloys that have applications in various nano-technology areas, ranging from the elec...
متن کاملNano-sized AlPO4-5 Crystals: Synthesis and characterization
Molecular sieves and zeolites are materials whose crystalline frameworks form nanometer or subnanometer pores. A variety of different crystal structures are known having a range of pore sizes. Because the pore sizes are usually smaller than 2 nm, they are classified as microporous materials. Synthesis of microporous materials is usually conducted by the high temperature treatment (80-200 °C) of...
متن کامل