Results 11 to 20 of about 26,906 (267)
Quantum dot in a hybrid structure with dipolar excitons [PDF]
Europhysics Letters, 2021 Abstract Electron states in a quantum dot (QD) located near a 2D system of dipolar excitons are perturbed by fluctuations of the exciton density caused by the electron-exciton interaction. This results in the frequency changes of electron transitions in a QD.
M. M. Mahmoodian, A. V. Chaplik
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Theory of Charge Sensing in Quantum-Dot Structures [PDF]
Physical Review Letters, 2005 Charge sensing in quantum-dot structures is studied by an exactly solvable reduced model and numerical density-matrix renormalization group methods. Charge sensing is characterized by the repeated cycling of the occupation of current-carrying states due to the capacitive coupling to trap states which are weakly coupled to the leads.
Berkovits, Richard +2 more
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Structural defects in graphene quantum dots: A review [PDF]
International Journal of Quantum Chemistry, 2021 AbstractGraphene quantum dots (GQDs) are known for their low toxicity, strong fluorescence, high surface area, large solubility, and tunable band gaps. However, the change in their properties depends on the preparation processes of GQDs. Thus, certain types of preparation lead to certain defects, such as surface defect, edge defects, Stone–Wales defect.
Ramisha Rabeya +5 more
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Sb2S3 Quantum-Dot Sensitized Solar Cells with Silicon Nanowire Photoelectrode
International Journal of Photoenergy, 2015 We propose a novel quantum-dot sensitized solar cell (QDSSC) structure that employs a quantum dot/semiconductor silicon (QD/Si) coaxial nanorod array to replace the conventional dye/TiO2/TCO photoelectrode.
You-Da Hsieh, Ming-Way Lee, Gou-Jen Wang
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Condensed Matter Physics, 2020 The structural and electronic properties of the metallic hcp phase of Zn in the bulk, monolayer, bilayer, and quantum dot limits have been studied by using total energy calculations. From our calculated density of states and electronic band structure, in
D. Olguín
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High-resolution spectroscopy of a quantum dot driven bichromatically by two strong coherent fields
Physical Review Research, 2021 We present spectroscopic experiments and theory of a quantum dot driven bichromatically by two strong coherent lasers. In particular, we explore the regime where the drive strengths are substantial enough to merit a general nonperturbative analysis ...
Chris Gustin +7 more
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Fabrication and evaluation of series-triple quantum dots by thermal oxidation of silicon nanowire
AIP Advances, 2015 Series-connected triple quantum dots were fabricated by a simple two-step oxidation technique using the pattern-dependent oxidation of a silicon nanowire and an additional oxidation of the nanowire through the gap of the fine gates attached to the ...
Takafumi Uchida +5 more
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Impact of Local Composition on the Emission Spectra of InGaN Quantum-Dot LEDs
Nanomaterials, 2023 A possible solution for the realization of high-efficiency visible light-emitting diodes (LEDs) exploits InGaN-quantum-dot-based active regions. However, the role of local composition fluctuations inside the quantum dots and their effect of the device ...
Daniele Barettin +7 more
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Theoretical study of intraband optical transitions in conduction band of dot-in-a-well system
AIP Advances, 2014 We study numerically absorption optical spectra of n-doped InAs/In015Ga085As/GaAs quantum dot-in-a-well systems. The absorption spectra are mainly determined by the size of a quantum dot and have weak dependence on the thickness of quantum well and ...
Venkata R. Chaganti, Vadym Apalkov
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Peculiarities of quasicrystalline films formation processes on crystal surface under irradiation with proton-ion flows [PDF]
MATEC Web of Conferences, 2021 Quasicrystalline film with densest package of atoms can be formed on a crystal surface under irradiating crystal surface with protonion flows at a certain ratio of atoms diameters of irradiated crystal and the ions of irradiating flow.
Melnikov Gennady +4 more
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