Single-particle-like charge-density excitations in charged spherical semiconductor quantum dots

2009 ◽  
Vol 79 (24) ◽  
Author(s):  
Chih-Li Weng ◽  
Yan-Chr Tsai
Keyword(s):  
Quantum Dots ◽  
Charge Density ◽  
Single Particle ◽  
Semiconductor Quantum Dots

ENERGY STATES IN QUANTUM DOTS

2002 ◽  
Vol 12 (01) ◽  
pp. 15-43 ◽  
Author(s):  
ANDREW J. WILLIAMSON
Keyword(s):  
Quantum Dots ◽  
Absorption Spectrum ◽  
Electronic Structure ◽  
Optical Absorption ◽  
Configuration Interaction ◽  
Single Particle ◽  
Optical Absorption Spectrum ◽  
Semiconductor Quantum Dots ◽  
Binding Energies ◽  
Particle Level

We describe a procedure for calculating the electronic structure of semiconductor quantum dots containing over one million atoms. The single particle electron levels are calculated by solving a Hamiltonian constructed from screened atomic pseudopotentials. Effects beyond the single particle level such as electron and hole exchange and correlation interactions are described using a configuration interaction (CI) approach. Application of these methods to the calculation of the optical absorption spectrum, Coulomb repulsions and multi-exciton binding energies of InGaAs self-assembled quantum dots are presented.

scholarly journals Photophysics and electroluminescence of single nanocrystals of halide perovskites and related nanomaterials

2018 ◽  
Vol 190 ◽  
pp. 02012
Author(s):  
Martin Vacha ◽  
Dharmendar Kumar Sharma
Keyword(s):  
Quantum Dots ◽  
Single Particle ◽  
Semiconductor Quantum Dots ◽  
Halide Perovskites ◽  
Halide Perovskite

We report simultaneous photoluminescence and electroluminescence single-particle study of nanocrystals of inorganic halide perovskite CsPbBr3, as well as of ternary I-III-IV semiconductor quantum dots.

Single-particle tunneling in semiconductor quantum dots

2001 ◽  
Vol 64 (11) ◽  
Author(s):  
Y. M. Niquet ◽  
C. Delerue ◽  
M. Lannoo ◽  
G. Allan
Keyword(s):  
Quantum Dots ◽  
Single Particle ◽  
Semiconductor Quantum Dots

scholarly journals ENTANGLEMENT CREATION IN SEMICONDUCTOR QUANTUM DOT CHARGE QUBIT

2011 ◽  
Vol 09 (supp01) ◽  
pp. 111-118
Author(s):  
FABRIZIO BUSCEMI ◽  
PAOLO BORDONE ◽  
ANDREA BERTONI
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Electron Scattering ◽  
Single Particle ◽  
Quantum Correlations ◽  
Semiconductor Quantum Dots ◽  
Coulomb Scattering ◽  
Charge Qubit ◽  
Scattered Particle ◽  
Semiconductor Quantum Dot

We study theoretically the appearance of quantum correlations in two- and three-electron scattering in single and double dots. The key role played by transport resonances into entanglement formation between the single-particle states is shown. Both reflected and transmitted components of the scattered particle wavefunction are used to evaluate the quantum correlations between the incident carrier and the bound particle(s) in the dots. Our investigation provides a guideline for the analysis of decoherence effects due to the Coulomb scattering in semiconductor quantum dots structures.

Semiconductor Quantum Dots for Multicolor Fluorescence Imaging and Spectroscopy of Single Cancer Cells

2003 ◽  
Vol 773 ◽  
Author(s):  
Xiaohu Gao ◽  
Shuming Nie ◽  
Wallace H. Coulter
Keyword(s):  
Quantum Dots ◽  
Cancer Cells ◽  
Fluorescence Imaging ◽  
Organic Dyes ◽  
Fluorescent Proteins ◽  
Single Cells ◽  
Quantitative Imaging ◽  
Semiconductor Quantum Dots ◽  
Single Cancer ◽  
Imaging And Spectroscopy

AbstractLuminescent quantum dots (QDs) are emerging as a new class of biological labels with unique properties and applications that are not available from traditional organic dyes and fluorescent proteins. Here we report new developments in using semiconductor quantum dots for quantitative imaging and spectroscopy of single cancer cells. We show that both live and fixed cells can be labeled with multicolor QDs, and that single cells can be analyzed by fluorescence imaging and wavelength-resolved spectroscopy. These results raise new possibilities in cancer imaging, molecular profiling, and disease staging.

Hot Topic and Challenge of Semiconductor Quantum Dots as Fluorescence Labels*

2010 ◽  
Vol 37 (1) ◽  
pp. 103-110 ◽  
Author(s):  
Chang-Yan LI ◽  
Qian LI ◽  
Hai-Tao LIU ◽  
Jun ZHANG ◽  
DAMIRIN Aletangaole
Keyword(s):  
Quantum Dots ◽  
Semiconductor Quantum Dots
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