Dimensionality dependence of optical properties and quantum confinement effects of hydrogenated silicon nanostructures

Article Abstract:

A study on the excited state properties of linear, planar, and spherical hydrogenated silicon nanostructures is conducted with use of a time-dependent Hartree-Fock (TDHF) approach with a semiempirical Hamiltonian. The calculated optical gaps decrease significantly from linear, planar, to spherical silicon structures, demonstrating that the optical gap is dimensionality dependent and hence it could be varied by solely managing the shape of the nanostructures.

All Other Basic Inorganic Chemical Manufacturing, Silicon & Inorganic Compounds, Analysis, Usage, Nanotechnology, Optical properties, Excited state chemistry, Silicon compounds, Hartree-Fock approximation

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Simple solvothermal route to synthesize ZnO nanosheets, nanonails, and well-aligned nanorod arrays

Article Abstract:

ZnO nanosheets, nanonails, and well-aligned nanorods were fabricated on Zn foils by a solvothermal approach using ethanol as the solvent. A lower synthesis temperature and a shorter time period favor the formation of nanosheets, optimizing the synthesis temperature and time period produces ZnO nanonails with a hexagonal cap and a long stem and addition of NaOH to the solvent led to the formation of ZnO nanorod arrays.

Thermal properties, Zinc oxide, Chemical synthesis, Chemical properties

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