Shell effects in quantum dots:  A semiclassical approach

2000 ◽  
Vol 62 (16) ◽  
pp. 10896-10901 ◽  
Author(s):  
Subhasis Sinha ◽  
R. Shankar ◽  
M. V. N. Murthy
Keyword(s):  
Quantum Dots ◽  
Semiclassical Approach ◽  
Shell Effects

scholarly journals Shell effects on hole-coupled electron transfer dynamics from CdSe/CdS quantum dots to methyl viologen

Nanoscale ◽  
2016 ◽  
Vol 8 (19) ◽  
pp. 10380-10387 ◽  
Author(s):  
Peng Zeng ◽  
Nicholas Kirkwood ◽  
Paul Mulvaney ◽  
Klaus Boldt ◽  
Trevor A. Smith
Keyword(s):  
Quantum Dots ◽  
Electron Transfer ◽  
Methyl Viologen ◽  
Cds Quantum Dots ◽  
Shell Effects

scholarly journals Size and Shell Effects on CdSe Quantum Dots in Binary Ligand System

2020 ◽  
Vol 29 (4) ◽  
pp. 87-90 ◽  
Author(s):  
Sung Hun Kima ◽  
Minh Tan Manb ◽  
Hong Seok Leea
Keyword(s):  
Quantum Dots ◽  
Cdse Quantum Dots ◽  
Shell Effects ◽  
Ligand System

scholarly journals Bloch vector formalism in the problem of nonlinear resonant response of a quasi-two-dimensional supercrystal

2020 ◽  
Vol 64 (6) ◽  
pp. 663-669
Author(s):  
E. V. Timoshchenko ◽  
V. A. Yurevich
Keyword(s):  
Quantum Dots ◽  
Analytical Solution ◽  
Light Field ◽  
Resonant Interaction ◽  
Physical Parameters ◽  
Two Dimensional ◽  
Resonant Response ◽  
Bloch Vector ◽  
Semiclassical Approach ◽  
Intraband Relaxation

Taking into account the ideas of the generalized two-level scheme, within the framework of the semiclassical approach to the consideration of the resonant interaction of the light field with matter, an analytical solution to the problem of the evolution of superradiance in a quasi-two-dimensional supercrystal formed by quantum dots is obtained. The calculation was carried out for the physical parameters of a semiconductor structure with quantum-well effects in the presence of resonant nonlinearity and intraband relaxation.

scholarly journals Interplay between shell effects and electron correlations in quantum dots

2000 ◽  
Vol 62 (15) ◽  
pp. 10207-10211 ◽  
Author(s):  
Jens Harting ◽  
Oliver Mülken ◽  
Peter Borrmann
Keyword(s):  
Quantum Dots ◽  
Electron Correlations ◽  
Shell Effects

Shell effects in quantum dots in tilted magnetic fields

1996 ◽  
Vol 222 (5) ◽  
pp. 309-314 ◽  
Author(s):  
W.D. Heiss ◽  
R.G. Nazmitdinov
Keyword(s):  
Quantum Dots ◽  
Magnetic Fields ◽  
Shell Effects

Nanostructure of semiconductor quantum dots in a borosilicate glass matrix by complementary use of HREM and AEM

1990 ◽  
Vol 48 (4) ◽  
pp. 728-729
Author(s):  
M.J. Kim ◽  
L.C. Liu ◽  
S.H. Risbud ◽  
R.W. Carpenter
Keyword(s):  
Quantum Dots ◽  
Borosilicate Glass ◽  
Glass Matrix ◽  
Optical Switching ◽  
Response Times ◽  
Fast Response ◽  
Processing Technique ◽  
Internal Stresses ◽  
Electron Hole ◽  
Spatial Dimensions

When the size of a semiconductor is reduced by an appropriate materials processing technique to a dimension less than about twice the radius of an exciton in the bulk crystal, the band like structure of the semiconductor gives way to discrete molecular orbital electronic states. Clusters of semiconductors in a size regime lower than 2R {where R is the exciton Bohr radius; e.g. 3 nm for CdS and 7.3 nm for CdTe) are called Quantum Dots (QD) because they confine optically excited electron- hole pairs (excitons) in all three spatial dimensions. Structures based on QD are of great interest because of fast response times and non-linearity in optical switching applications.In this paper we report the first HREM analysis of the size and structure of CdTe and CdS QD formed by precipitation from a modified borosilicate glass matrix. The glass melts were quenched by pouring on brass plates, and then annealed to relieve internal stresses. QD precipitate particles were formed during subsequent "striking" heat treatments above the glass crystallization temperature, which was determined by differential thermal analysis.

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