Role of point-defect charging dynamics in quantum-well magneto-transport

2020 ◽  
Author(s):  
Danhong Huang ◽  
Andrii Iurov ◽  
Godfrey Gumbs ◽  
Fei Gao
Keyword(s):  
Quantum Well ◽  
Point Defect ◽  
Charging Dynamics

High Pressure Studies of Quantum Well Emission and Deep Emission in GaInP(ordered)-GaAs Heterostructures

1997 ◽  
Vol 499 ◽  
Author(s):  
S. H. Kwok ◽  
P. Y. Yu ◽  
K. Uchida ◽  
T. Arai
Keyword(s):  
High Pressure ◽  
Quantum Well ◽  
Emission Band ◽  
Excitation Power ◽  
High Excitation ◽  
High Pressure Studies ◽  
Band Alignments ◽  
High Pressure Study

ABSTRACTWe report on a high pressure study of emission from a series of GaInP(ordered)/GaAs heterostructures. A so-called “deep emission” band at 1.46 eV is observed in all our samples. At high excitation power, quantum well emission emerges in only one structure where thin GaP layers are inserted on both sides of the GaAs well. From the pressure dependent emission in this sample we have determined its band alignments. The role of the GaP layers in suppressing the deep emission is elucidated.

C-V and DLTS Investigations of GaAs/InGaAs/GaAs Strained Quantum Well Structures

1993 ◽  
Vol 300 ◽  
Author(s):  
S. Subramanian ◽  
B. M. Arora ◽  
A. K. Srivastava ◽  
S. Banerjee ◽  
G. Fernandes
Keyword(s):  
Quantum Well ◽  
Band Offset ◽  
Full Width ◽  
Single Quantum ◽  
Single Quantum Well ◽  
Quantum Well Structures ◽  
Strained Quantum Well ◽  
Good Agreement

ABSTRACTIn this paper we report a modified Kroemer's analysis for the determination of the band offset (ΔEc) of single quantum well (SQW) structures from simple C-V measurements. The experimental carrier profile from an MOVPE grown pseudomorphic GaAs/InGaAs/GaAs strained SQW structure shows a sharp accumulation peak bounded by depletion regions on either side. The full width at half maximum of the accumulation peak is comparable to the width of the quantum well. The value of ΔEC obtained from C-V measurement is in good agreement with the values determined by simulation and photoluminescence measurements. DLTS measurements on our SQW samples do not show any peaks which is contrary to the published reports. We believe that it is necessary to carefully isolate the role of interface states, before assigning a DLTS peak to emission from the quantum well.

Role of Coulomb-correlated electron-hole pairs in ZnSe-based quantum-well diode lasers

1994 ◽  
Vol 50 (8) ◽  
pp. 5787-5790 ◽  
Author(s):  
J. Ding ◽  
M. Hagerott ◽  
P. Kelkar ◽  
A. V. Nurmikko ◽  
D. C. Grillo ◽  
...  
Keyword(s):  
Quantum Well ◽  
Diode Lasers ◽  
Electron Hole ◽  
Correlated Electron

Al+and N+implantation in silicon carbide: a role of point defect clusters in defect evolution

2001 ◽  
Author(s):  
Peter V. Rybin ◽  
Dmitri V. Kulikov ◽  
Yuri V. Trushin ◽  
J. Petzoldt
Keyword(s):  
Silicon Carbide ◽  
Point Defect ◽  
Defect Clusters ◽  
Defect Evolution ◽  
Point Defect Clusters

Magneto-thermoelectric effects in two-dimensional quantum well: role of short-range potential

2009 ◽  
Vol 81 (1) ◽  
pp. 015701 ◽  
Author(s):  
F M Hashimzade ◽  
Kh A Hasanov ◽  
B H Mehdiyev ◽  
S Cakmak
Keyword(s):  
Quantum Well ◽  
Short Range ◽  
Two Dimensional ◽  
Thermoelectric Effects ◽  
Short Range Potential ◽  
Range Potential

Role of Stefan–Maxwell fluxes in the dynamics of concentrated electrolytes

Soft Matter ◽  
2018 ◽  
Vol 14 (41) ◽  
pp. 8267-8275 ◽  
Author(s):  
Bhavya Balu ◽  
Aditya S. Khair
Keyword(s):  
Theoretical Analysis ◽  
Electrochemical Cell ◽  
Ionic Fluxes ◽  
Concentrated Electrolytes ◽  
Charging Dynamics

This theoretical analysis quantifies the effect of coupled ionic fluxes on the charging dynamics of an electrochemical cell.

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