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

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 study of 100-MeV chlorine ion-irradiated hydroxyl-free ZnO semiconductor quantum dots

2002 ◽  
Vol 92 (12) ◽  
pp. 7149-7152 ◽  
Author(s):  
D. Mohanta ◽  
S. S. Nath ◽  
A. Bordoloi ◽  
A. Choudhury ◽  
S. K. Dolui ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Absorption ◽  
Semiconductor Quantum Dots ◽  
Absorption Study ◽  
Optical Absorption Study ◽  
Chlorine Ion ◽  
Zno Semiconductor

scholarly journals Electron-hole correlations in semiconductor quantum dots with tight-binding wave functions

2001 ◽  
Vol 63 (19) ◽  
Author(s):  
Seungwon Lee ◽  
Lars Jönsson ◽  
John W. Wilkins ◽  
Garnett W. Bryant ◽  
Gerhard Klimeck
Keyword(s):  
Quantum Dots ◽  
Tight Binding ◽  
Semiconductor Quantum Dots ◽  
Wave Functions ◽  
Electron Hole

Fabrication of III-V Semiconductor Quantum Dots in Porous Glass.

1988 ◽  
Vol 144 ◽  
Author(s):  
John C. Luong ◽  
Nicholas F. Borrelli
Keyword(s):  
Quantum Dots ◽  
Optical Absorption ◽  
Porous Glass ◽  
Microwave Plasma ◽  
Semiconductor Quantum Dots ◽  
Theoretical Interest ◽  
Quantum Size ◽  
Quantum Confined ◽  
Organometallic Precursors ◽  
Mocvd Technique

ABSTRACTSpatially quantized systems of III–V compounds have, in recent years, attracted considerable theoretical interest. However, the fabrication of quantum dots, a three-dimensionally quantum-confined microstructure, is particularly cumbersome and requires sophisticated lateral patterning techniques. A method, reported recently, which utilizes the microporosity of Vycor brand porous glass to produce quantum-confined microcrystals of II–VI and IV–VI semiconductors, is now extended to the fabrication of III–V quantum dots, by incorporating a microwave plasma assisted MOCVD technique. In this process, organometallic precursors impregnated in porous glass can be effectively cracked to deposit III–V microcrystals in glass. The results are discussed in light of the quantum size effect manifested by the optical absorption and photoluminescence data.

QUANTUM CONFINEMENT AND COULOMB EFFECTS IN SEMICONDUCTOR QUANTUM DOTS

1990 ◽  
Vol 04 (16) ◽  
pp. 1009-1016 ◽  
Author(s):  
Y.Z. HU ◽  
S.W. KOCH ◽  
D.B. TRAN THOAI
Keyword(s):  
Quantum Dots ◽  
Optical Absorption ◽  
Absorption Spectra ◽  
Quantum Confinement ◽  
Semiconductor Quantum Dots ◽  
Optical Absorption Spectra ◽  
Electron Hole ◽  
Quantum Confinement Effects ◽  
Electron Hole Pair ◽  
Coulomb Effects

Coulomb and quantum confinement effects in small semiconductor microcrystallites are analyzed. Energies and wavefunctions for one- and two-electron-hole-pair states are computed and optical absorption spectra are evaluated.

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