Polaron Effect In Semiconductor Quantum Dots: Impact On The Optical Absorption, Up-converted Photoluminescence And Raman Scattering

2005 ◽  
Author(s):  
M. I. Vasilevskiy
Keyword(s):  
Quantum Dots ◽  
Optical Absorption ◽  
Raman Scattering ◽  
Semiconductor Quantum Dots ◽  
Polaron Effect

scholarly journals Polaron effect on Raman scattering in semiconductor quantum dots

2004 ◽  
Vol 19 (4) ◽  
pp. S312-S315 ◽  
Author(s):  
M I Vasilevskiy ◽  
R P Miranda ◽  
E V Anda ◽  
S S Makler
Keyword(s):  
Quantum Dots ◽  
Raman Scattering ◽  
Semiconductor Quantum Dots ◽  
Polaron Effect

EXCITON-MEDIATED RAMAN SCATTERING IN ONE-DIMENSIONAL QUANTUM DOTS

2011 ◽  
Vol 25 (32) ◽  
pp. 4387-4393 ◽  
Author(s):  
HAI-CHAO SUN ◽  
CUI-HONG LIU
Keyword(s):  
Quantum Dots ◽  
Differential Cross Section ◽  
Raman Scattering ◽  
Cross Section ◽  
Differential Cross ◽  
Semiconductor Quantum Dots ◽  
Scattering Process ◽  
One Dimensional ◽  
Intermediate States ◽  
Potential Frequency

The differential cross section (DCS) for exciton-mediated Raman scattering (EMRS) in one-dimensional semiconductor quantum dots is presented. The exciton states are considered as intermediate states in the Raman scattering process. The selection rules for the EMRS process are studied. The numerical results show that the contribution to DCS indicated by exciton is larger than that by electron. DCS of EMRS is larger when there is a bigger confinement potential frequency.

Electron Raman Scattering and Raman Gain in Pyramidal Semiconductor Quantum Dots

2017 ◽  
Vol 17 (2) ◽  
pp. 1140-1148
Author(s):  
K Monsalve-Calderón ◽  
A Gil-Corrales ◽  
A.L Morales ◽  
R.L Restrepo ◽  
M. E Mora-Ramos ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Raman Scattering ◽  
Semiconductor Quantum Dots ◽  
Raman Gain

FIRST ORDER RAMAN SCATTERING FROM SEMICONDUCTOR QUANTUM DOTS

1989 ◽  
Vol 03 (08) ◽  
pp. 1167-1181 ◽  
Author(s):  
P.A.M. RODRIGUES ◽  
HILDA A. CERDEIRA ◽  
F. CERDEIRA
Keyword(s):  
Crystal Structure ◽  
Quantum Dots ◽  
Raman Spectrum ◽  
Raman Scattering ◽  
Bulk Material ◽  
Semiconductor Quantum Dots ◽  
Polycrystalline Materials ◽  
Nanometer Size ◽  
First Order ◽  
Linear Dimensions

We develop a model appropriate for describing the Raman spectrum of samples, containing a collection of semiconductor quantum dots with and without dispersion in their linear dimensions. These nanometer size crystallites are assumed to have the same atomic arrangement as that of the bulk material and to be embedded in a host material made up of a different semiconductor of the same crystal structure. The results from our calculations are compared to previous models for polycrystalline materials.

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.

Effect of size dispersion on the optical absorption of an ensemble of semiconductor quantum dots

1998 ◽  
Vol 32 (11) ◽  
pp. 1229-1233 ◽  
Author(s):  
M. I. Vasilevskii ◽  
E. I. Akinkina ◽  
A. M. de Paula ◽  
E. V. Anda
Keyword(s):  
Quantum Dots ◽  
Optical Absorption ◽  
Semiconductor Quantum Dots ◽  
Size Dispersion

Optical absorption in semiconductor quantum dots: A tight-binding approach

1993 ◽  
Vol 47 (12) ◽  
pp. 7132-7139 ◽  
Author(s):  
Lavanya M. Ramaniah ◽  
Selvakumar V. Nair
Keyword(s):  
Quantum Dots ◽  
Optical Absorption ◽  
Tight Binding ◽  
Semiconductor Quantum Dots
Sign in / Sign up

Export Citation Format

Share Document