Femtosecond nonlinear spectroscopy of semiconductor quantum dots: effect of two-electron-hole-pair interaction

2002 ◽  
Author(s):  
S. Hunsche ◽  
V. Klimov ◽  
H. Kurz
Keyword(s):  
Quantum Dots ◽  
Pair Interaction ◽  
Nonlinear Spectroscopy ◽  
Semiconductor Quantum Dots ◽  
Hole Pair ◽  
Electron Hole ◽  
Electron Hole Pair

Electron-Hole Pair Relaxation Dynamics in Binary Copper-Based Semiconductor Quantum Dots

2005 ◽  
Vol 152 (6) ◽  
pp. G427 ◽  
Author(s):  
Yongbing Lou ◽  
Ming Yin ◽  
Stephen O’Brien ◽  
Clemens Burda
Keyword(s):  
Quantum Dots ◽  
Semiconductor Quantum Dots ◽  
Hole Pair ◽  
Relaxation Dynamics ◽  
Electron Hole ◽  
Electron Hole Pair

Investigation of Two-Electron-Hole Pair Resonances in Semiconductor Quantum Dots

1991 ◽  
pp. 289-295
Author(s):  
N. Peyghambarian ◽  
B. P. McGinnis ◽  
K. I. Kang ◽  
Sandalphon ◽  
S. W. Koch ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Semiconductor Quantum Dots ◽  
Hole Pair ◽  
Electron Hole ◽  
Electron Hole Pair

Homogeneous linewidth of confined electron-hole-pair states in II-VI quantum dots

1993 ◽  
Vol 47 (7) ◽  
pp. 3684-3689 ◽  
Author(s):  
U. Woggon ◽  
S. Gaponenko ◽  
W. Langbein ◽  
A. Uhrig ◽  
C. Klingshirn
Keyword(s):  
Quantum Dots ◽  
Hole Pair ◽  
Electron Hole ◽  
Electron Hole Pair ◽  
Homogeneous Linewidth

Interband Optical Transition Energies in Type-II PbSe/PbS Core/Shell Quantum Dots

2017 ◽  
Vol 6 (1) ◽  
pp. 80-86
Author(s):  
S. N. Saravanamoorthy ◽  
A. John Peter
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Shell Thickness ◽  
Optical Transition ◽  
Hole Pair ◽  
Core Shell ◽  
Type Ii ◽  
Electron Hole ◽  
Transition Energies ◽  
Electron Hole Pair

Electronic and optical properties of Type-II lead based core/shell semiconducting quantum dots are reported. Binding energies of electron–hole pair, optical transition energies and the absorption coefficients are investigated taking into account the geometrical confinement in PbSe/PbS core/shell quantum dot nanostructure. The energies are obtained with the increase of shell thickness for various inner core radii. The probability densities of electron and hole wave functions of radial coordinate of the core PbSe and PbS shell quantum dots are presented. The optical transition energy with the spatial confinement is brought out. The electronic properties are obtained using variational approach whereas the compact density matrix method is employed for the nonlinear optical properties. The results show that (i) a decrease in binding energy is obtained when the shell thickness increases due to more separation of electron–hole pair and (ii) the energy band gap decreases with the increase in the shell thickness resulting in the reduction of the higher energy interband transitions.

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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