On the radiative recombination and tunneling of charge carriers in SiGe/Si heterostructures with double quantum wells

2016 ◽  
Vol 50 (12) ◽  
pp. 1604-1608
Author(s):  
A. N. Yablonsky ◽  
R. Kh. Zhukavin ◽  
N. A. Bekin ◽  
A. V. Novikov ◽  
D. V. Yurasov ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Radiative Recombination ◽  
Charge Carriers ◽  
Double Quantum

Interwell radiative recombination of a 2D electron gas in electrically biased double quantum wells

1998 ◽  
Vol 41 (2) ◽  
pp. 109-112 ◽  
Author(s):  
Vladislav B Timofeev ◽  
A V Larionov ◽  
J Zeman ◽  
G Martinez ◽  
J Hvam ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Radiative Recombination ◽  
Electron Gas ◽  
Double Quantum ◽  
2D Electron Gas

scholarly journals Spectroscopic evidence of tunnel coupling between CdTe quantum wells in the CdTe/ZnTe heterostructures

2021 ◽  
Vol 2103 (1) ◽  
pp. 012102
Author(s):  
V Agekyan ◽  
N Filosofov ◽  
G Karczewski ◽  
A Serov ◽  
I Shtrom ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Atomic Layer ◽  
Pump Intensity ◽  
Excitation Intensity ◽  
Charge Carriers ◽  
Atomic Layer Epitaxy ◽  
Double Quantum ◽  
Excitation Wavelength ◽  
Carrier Relaxation ◽  
Tunnel Coupling

Abstract The photoluminescence (PL) spectra of CdTe/ZnTe double quantum wells (QWs) are studied on a series of samples containing two CdTe layers with nominal thicknesses of 2 and 4 monolayers (ML) in the ZnTe matrix. The QWs were grown in atomic-layer epitaxy and separated by ZnTe spacers with the thicknesses dsp =40−160 ML. The dependences of the relative intensity of shallow QW1 and deep QW2 PL bands (I1 and I2 , respectively) on the pump intensity (J) when excited by the lasers with different radiation wavelengths are investigated. It is found that in the sample with dsp=40 ML, the ratio Y(J)=I1/I2 depends on J and the shape of the Y(J) dependency changes with the excitation wavelength. In the samples with dsp > 70 ML Y(J) also changes with the excitation intensity J, but the shape of this dependence is the same for various excitation wavelengths. It is concluded that the energy relaxation in these samples is influenced not only by the tunneling of charge carriers from QW1 to QW2, but also by carrier relaxation at the nonradiative centers, for which the recombination rate is different for shallow and deep QWs.

Interwell radiative recombination in the presence of random potential fluctuations in GaAs/AlGaAs biased double quantum wells

JETP Letters ◽  
1998 ◽  
Vol 67 (8) ◽  
pp. 613-620 ◽  
Author(s):  
V. B. Timofeev ◽  
A. V. Larionov ◽  
A. S. Ioselevich ◽  
J. Zeman ◽  
G. Martinez ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Radiative Recombination ◽  
Random Potential ◽  
Double Quantum ◽  
Potential Fluctuations

scholarly journals MODELING OF RADIATIVE RECOMBINATION IN HETEROSTRUCTURES ON QUANTUM WELLS

2019 ◽  
Vol 6 (1) ◽  
pp. 9-15
Author(s):  
Oleg Zadorozhny ◽  
Olesya Karankevich ◽  
Valery Davydov
Keyword(s):  
Quantum Wells ◽  
Recombination Rate ◽  
Radiative Recombination ◽  
Charge Carriers

It is established that the model of an interzonal radiating recombination in the semiconductor at bipolar injection of charge carriers in which the recombination rate is described by multiply of the complete concentration of charge carriers does not consider the imbalance of concentration of the recombining particles which is physically arising at a doping.

Interwell radiative recombination of a 2D electron gas in electrically biased double quantum wells

1998 ◽  
Vol 168 (2) ◽  
pp. 117 ◽  
Author(s):  
Vladislav B. Timofeev ◽  
A.V. Larionov ◽  
J. Zeman ◽  
G. Martinez ◽  
J. Hvam ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Radiative Recombination ◽  
Electron Gas ◽  
Double Quantum ◽  
2D Electron Gas

Evidence for condensation of excitons in double quantum wells

1996 ◽  
Vol 166 (7) ◽  
pp. 801-803 ◽  
Author(s):  
L.V. Butov ◽  
A. Zrenner ◽  
M. Hagn ◽  
G. Abstreiter ◽  
G. Boehm ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Double Quantum

Magneto-optical spectroscopy of modulation-doped GaAs/AlGaAs asymmetric coupled double quantum wells

1999 ◽  
Vol 110 (11) ◽  
pp. 633-638
Author(s):  
Joo In Lee ◽  
Annamratu Kasi Viswanath ◽  
Sungkyu Yu ◽  
Eun-Joo Shin ◽  
Kyu-Seok Lee ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Optical Spectroscopy ◽  
Double Quantum

Tunnelling and relaxation in semiconductor double quantum wells

1997 ◽  
Vol 60 (3) ◽  
pp. 345-387 ◽  
Author(s):  
R Ferreira ◽  
G Bastard
Keyword(s):  
Quantum Wells ◽  
Double Quantum
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