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Showing 1 to 8 of 8 for “"electron-hole interaction"”.
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Development and Efficient Implementation of Electron-Hole Interaction Kernel for Investigation of Electronic Excitations in Semiconductor and Metallic Nanoparticles
… on efficient theories that allow for capturing electron-correlation in semiconductor or metallic nanoparticles. These systems are computationally challenging due to the size of the systems, the number of electrons per atom, and the degeneracy of the particle-hole states. Three methods presented …
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Electric field effects on optical absorption by excitons in semiconductors
… single-particle theory, the inclusion of the electron-hole interaction increases the oscillator strengths at the Mo edge and at the same time enhances and shifts the Franz-Keldysh type oscillations near the edge. The effect of the electron-hole interaction on the M3 edge is to decrease the …
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A method for the calculation of excitonic effects in certain metals
Due to the long-range screening behavior of electrons in metals, interactions between excited electrons and their corresponding holes are few and are generally ignored. In this thesis, we attempt to include this electron-hole interaction into the calculation by randomly choosing a finite number of …
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Development of explicitly correlated and many-body diagrammatic techniques for the investigation of electron-hole correlation in nanomaterials
… methods that will accurately describe electron-electron and electron-hole correlation in nanoparticles using many-body diagrammatic techniques. Diagrammatic representation is a more complex representation of quantum mechanics, however, it becomes a more advantageous representation in …
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Development and Application of Explicitly Correlated Wave Function Based Methods for the Investigation of Optical Properties of Semiconductor Nanomaterials
… are well known to have very unique optical and electronic properties. These properties can be controlled and tailored as a function of several influential factors, including but not limited to the particle size and shape, effect of composition and heterojunction as well as the effect of ligand …
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Peculiar perovskites: Unraveling the unique optical response of hybrid organic-inorganic perovskites from first principles
… (LHOP) have been extensively applied to optoelectronic applications including solar cells, light-emitting diodes, optical detectors, and spintronics due to their unique atomic, electronic, and optical properties. HOPs and LHOPs are hosts to fascinating microscopic interactions that influence …
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Anisotropy and Time Evolution of the Electron-Hole Droplet Cloud in Germanium
Submitted by Carolyn Rauber (crauber2@illinois.edu) on 2011-06-03T17:54:39Z No. of bitstreams: 1 1981_greenstein.pdf: 9526240 bytes, checksum: 76a5c2b687be76b09e1ebe01b21d036b (MD5)
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Spin-Orbit Delays in Photoemission from Bi2Te3 and Bi2Se3
… in real-time via attosecond time-resolved photoelectron spectroscopy [1]. In this work *Reconstruction of Attosecond Beating By Interference of Two-photon Transitions* (RABBITT) [2] is applied to Bi<sub>*2*</sub>Te<sub>*3*</sub> and Bi<sub>*2*</sub>Se<sub>*3*</sub> crystals. Here, the first …