Experimental and theoretical investigations of electronic and atomic structure of si-nanocrystals formed in sapphire by ion implantation
Journal of Physics: Conference Series
MetadataShow full item record
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/26894
The semiconductor nanocomposites based on Si nanocrystals in dielectric matrices attract a great amount of attention due to their ability for luminescence in visible and near-IR part of the electromagnetic spectrum. Si nanocrystals in sapphire matrix were formed by Si+ ion implantation with doses from 5×1016 to 3×1017 cm -2 at an accelerating voltage 100 kV and post-implantation annealing at 500-1100 d̀C for 2 hours. Depth distribution of lattice defects, impurities and Si nanocrystals, the peculiarities of interband electronic transitions were investigated by XPS and HREELS. The molecular orbitals and local electronic structure of the Al2O3 matrix with Si nanocrystals was calculated using an atomistic pseudopotential technique. The electronic structure of Si nanocrystals as determined from HREELS measurements is in good agreement with the theoretically calculated electronic structure for Si nanocrystals. © 2008 IOP Publishing Ltd.
Showing items related by title, author, creator and subject.
Preparation, surface state and band structure studies of SrTi (1-X)Fe (x)O (3-δ) (x = 0-1) perovskite-type nano structure by X-ray and ultraviolet photoelectron spectroscopy Ghaffari, M.; Shannon, M.; Hui H.; Tan O.K.; Irannejad, A. (2012)In this report, SrTi (1 - x)Fe (x)O (3 - δ) photocatalyst powder was synthesized by a high temperature solid state reaction method. The morphology, crystalline structures of obtained samples, was characterized by X-ray ...
Dynamical screening effects in hot-electron scattering from electron-hole plasma and LO-phonon modes in quantum wires Bennett, C. R.; Tanatar, B.; Constantinou, N. C. (Elsevier, 1996)We present a fully dynamical and finite temperature study of the hot-electron momentum relaxation rate and the power loss in a coupled system of electron-hole plasma and bulk LO-phonons in a quantum wire structure. ...
Koc H.; Mamedov, A.M.; Ozbay, E. (IEEE Computer Society, 2013)We have performed a first principles study of structural, elastic, and electronic properties of rhombohedral Sb2Te3 and Bi 2Te3 compounds using the density functional theory within the local density approximation. The ...