Two-dimensional electron-hole pair diffusivities in thin GaAs/AlGaAs Quantum Wells

1993 ◽  
Vol 56 (5) ◽  
pp. 445-448 ◽  
Author(s):  
H. Hillmer ◽  
C. W. Tu
Keyword(s):  
Quantum Wells ◽  
Hole Pair ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Electron Hole ◽  
Electron Hole Pair

Effect of well thickness on the two-dimensional electron-hole system inAlxGa1−xSb/InAs quantum wells

1997 ◽  
Vol 55 (20) ◽  
pp. 13677-13681 ◽  
Author(s):  
Ikai Lo ◽  
Jih-Chen Chiang ◽  
Shiow-Fon Tsay ◽  
W. C. Mitchel ◽  
M. Ahoujja ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Electron Hole

Fine structure of the emission spectrum of a two-dimensional electron–hole liquid in SiGe/Si quantum wells

JETP Letters ◽  
2016 ◽  
Vol 104 (3) ◽  
pp. 163-168 ◽  
Author(s):  
S. N. Nikolaev ◽  
V. S. Krivobok ◽  
V. S. Bagaev ◽  
E. E. Onishchenko ◽  
A. V. Novikov ◽  
...  
Keyword(s):  
Fine Structure ◽  
Emission Spectrum ◽  
Quantum Wells ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Electron Hole

Excited states of two-dimensional excitons in quantum wells

2002 ◽  
Vol 80 (7) ◽  
pp. 781-786
Author(s):  
Y P Varshni
Keyword(s):  
Quantum Well ◽  
Quantum Wells ◽  
Excited States ◽  
Coulomb Interaction ◽  
Two Dimensional ◽  
Wkb Method ◽  
Electron Hole ◽  
Free Carriers ◽  
Screening Parameter ◽  
Electron Hole Pair

The energies of ten excited states of screened two-dimensional excitons in a semiconducting quantum-well structure are calculated as a function of the screening parameter qs by the WKB method. The screening of the Coulomb interaction between the electron–hole pair by the free carriers present is taken into account by using the screened potential obtained by Stern and Howard (1967). The energies of the excited states are found to decrease with increasing values of the screening parameter qs in all cases. Further the levels become unbound at finite values of the screening parameter. Critical screening parameters are estimated for the ten states. PACS Nos.: 73.21Fg, 78.67De, 71.35-y, 71.35Cc

Enhancement of electron-hole pair mobilities in thin GaAs/AlxGa1−xAs quantum wells

1992 ◽  
Vol 45 (3) ◽  
pp. 1240-1245 ◽  
Author(s):  
H. Hillmer ◽  
A. Forchel ◽  
C. W. Tu
Keyword(s):  
Quantum Wells ◽  
Hole Pair ◽  
Electron Hole ◽  
Electron Hole Pair

scholarly journals Спектр излучения и стабильность двух типов электронно-дырочной жидкости в мелких Si/Si-=SUB=-1-x-=/SUB=-Ge-=SUB=-x-=/SUB=-Si квантовых ямах

2020 ◽  
Vol 62 (4) ◽  
pp. 529
Author(s):  
А.А. Васильченко ◽  
В.С. Кривобок ◽  
С.Н. Николаев ◽  
В.С. Багаев ◽  
Е.Е. Онищенко ◽  
...  
Keyword(s):  
Low Temperature ◽  
Quantum Wells ◽  
Density Functional ◽  
Two Dimensional ◽  
Photoluminescence Spectra ◽  
Dimensional Electron ◽  
Electron Hole ◽  
Germanium Content ◽  
Well Design ◽  
Low Temperature Photoluminescence

Abstract Based on calculations within the density functional theory and an analysis of low-temperature photoluminescence spectra, the structure of electron–hole liquid in shallow Si/Si_1 – _ x Ge_ x Si (100) quantum wells 5 nm wide with germanium content x = 3–5.5% is studied. It is shown that the energy of quasi-two-dimensional electron–hole liquid localized in quantum wells for this composition range as a function of carrier concentration exhibits two local minima. The position of the deeper (major) minimum depends on the quantum well design and controls properties of quasi-two-dimensional electron–hole liquid at low temperatures. For the series of Si/Si_1 – _ x Ge_ x Si quantum wells, modification of properties of electron–hole liquid was experimentally shown, which can be interpreted as a change of the major minimum due to an increases in the germanium concentration in the Si_1 – _ x Ge_ x layer. The effect of the multicomponent composition (electrons, light and heavy holes) of the electron–hole liquid on low-temperature photoluminescence spectra of Si/Si_1 ‒ _ x Ge_ x Si quantum wells is discussed.

Graphene oxide as a structure-directing agent for the two-dimensional interface engineering of sandwich-like graphene–g-C3N4 hybrid nanostructures with enhanced visible-light photoreduction of CO2 to methane

2015 ◽  
Vol 51 (5) ◽  
pp. 858-861 ◽  
Author(s):  
Wee-Jun Ong ◽  
Lling-Lling Tan ◽  
Siang-Piao Chai ◽  
Siek-Ting Yong
Keyword(s):  
Graphene Oxide ◽  
Visible Light ◽  
Hole Pair ◽  
Hybrid Nanostructures ◽  
Two Dimensional ◽  
Interface Engineering ◽  
Electron Hole ◽  
Structure Directing Agent ◽  
Electron Hole Pair

Graphene–g-C3N4 demonstrated high visible-light photoactivity of CO2 reduction to CH4, which was ascribed to the inhibition of electron–hole pair recombination by graphene.

Transition from excitonic to plasma emission from localized electron-hole pair states in GaAs-AlGaAs quantum wells

2011 ◽  
Vol 8 (4) ◽  
pp. 1161-1164 ◽  
Author(s):  
G. Manzke ◽  
F. Richter ◽  
D. Semkat ◽  
G. K. G. Burau ◽  
F. Kieseling ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Hole Pair ◽  
Plasma Emission ◽  
Electron Hole ◽  
Electron Hole Pair

Two-dimensional electron-hole system in HgTe-based quantum wells with surface orientation (112)

2011 ◽  
Vol 83 (19) ◽  
Author(s):  
Z. D. Kvon ◽  
E. B. Olshanetsky ◽  
E. G. Novik ◽  
D. A. Kozlov ◽  
N. N. Mikhailov ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Surface Orientation ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Electron Hole
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