Topic
Potential well
About: Potential well is a research topic. Over the lifetime, 1430 publications have been published within this topic receiving 30812 citations.
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TL;DR: In this paper, the photon energy of the main photoluminescence (PL) band is higher than the band gap of bulk SiC, which indicates that the optical emission mainly occurs in quantum states of 3C-SiC nanocrystals.
10 citations
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TL;DR: In this paper, the effect of substitution of Zn2+ by Cd2+ ion leads to an increase in the lattice parameters and the average size of zinc blended nanoparticles are in the range of 3-4nm.
10 citations
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TL;DR: In this article, the face-centered cubic PbTe micro-needles were synthesized by a simple aqueous chemical reaction between lead acetate and tellurium in NaOH solution in the presence of Na{sub 2}HPO{sub 4} as reducing reagent without any additional surfactants or templates.
10 citations
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TL;DR: In this paper, the localization of two-dimensional electron-hole complexes at the attractive potential of arbitrary shape is treated theoretically and a general method of construction of simple descriptive trial functions is suggested to calculate the binding energy of the ground state of such complexes.
Abstract: The localization of two-dimensional electron-hole complexes at the attractive potential of arbitrary shape is treated theoretically A general method of construction of simple descriptive trial functions is suggested to calculate the binding energy of the ground state of such complexes The limiting cases corresponding to different relations between the characteristic parameters of the system are analyzed The developed approach is illustrated by particular calculations for the exciton in a two-dimensional quantum well with an additional lateral potential
10 citations
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TL;DR: In this article, a green chemie douce approach was used to synthesize cuprous oxide (Cu2O) nano-octahedron via a microwave hydrothermal route at low growth temperature without the presence of any surfactant.
Abstract: A novel and efficient synthesis of cuprous oxide (Cu2O) nano-octahedron was successfully prepared via a green chemie douce approach utilized a microwave hydrothermal route at low growth temperature without the presence of any surfactant. The crystalline structure of the Cu2O was characterized by several techniques like X-ray powder diffraction (XRD), Fourier transformation spectroscopy, field-emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy and transmission electron microscopy (TEM). XRD results indicate that the size of Cu2O nano—octahedron is 71 nm which is calculated with the help of Scherer equation, as supported by FESEM and TEM. The formation mechanism of the Cu2O octahedral was discussed. Optical absorption spectra reveal that the optical band gap of the Cu2O is controlled by quantum confinement effect. The obtained optical energy gap value E
g
of Cu2O octahedron was about 2.43 eV. The photoluminescence emission spectra of the Cu2O nano-octahedrons exhibit two emission peaks located at 342 and 365 nm due to the quantum effect. It is evaluated that the green chemie douce approach is a cheap and fast to synthesize Cu2O nano-octahedrons and could be potentially extended to other inorganic systems for industrial production.
10 citations