Geometry and material parameter dependence of InAs/GaAs quantum dot electronic structure

1999 ◽  
Vol 60 (4) ◽  
pp. 2869-2874 ◽  
Author(s):  
Craig Pryor
Keyword(s):  
Electronic Structure ◽  
Quantum Dot ◽  
Material Parameter ◽  
Parameter Dependence ◽  
Gaas Quantum Dot

Electronic structure calculation of GaSb/GaAs quantum dot

2014 ◽  
Author(s):  
Suwit Kiravittaya ◽  
Maetee Kunrugsa ◽  
Supachok Thainoi ◽  
Somchai Ratanathammaphan ◽  
Somsak Panyakeow
Keyword(s):  
Electronic Structure ◽  
Quantum Dot ◽  
Structure Calculation ◽  
Electronic Structure Calculation ◽  
Gaas Quantum Dot

The Electronic Structure of Truncated-Conical Shaped InAs/GaAs Quantum Dot With Wetting Layers

2007 ◽  
Author(s):  
Yumin Liu ◽  
Zhongyuan Yu ◽  
Xiaomin Ren
Keyword(s):  
Quantum Dots ◽  
Finite Element ◽  
Electronic Structure ◽  
Quantum Dot ◽  
Effective Mass ◽  
Wetting Layer ◽  
Step Potential ◽  
Major Interest ◽  
Gaas Quantum Dot ◽  
Element Technique

Semiconductor quantum dots have been of major interest in recent years. This has largely been simulated by progress in quantum dot growth technology, whereby self-organized quantum dots array can be achieved using Stranski-Krastanow growth mode. Quantum does material has achieved broad applications in optoelectronic devices and quantum information fields because of the unique 3-D electron confinement. Based on the 1-band effective-mass theory, a finite element technique is developed to calculate the electronic structure of conical shaped InAs/GaAs quantum dot, including the wetting layer. Using the axis-symmetry model, the 3-D effective-mass Schro¨dinger equation with step potential barrier can be reduced to a 2-D problem by separating variable, which greatly reduced the calculation cost. Based on the result, we found, compared without wetting layer, the wetting layer can influence the electron level. This may attribute to the increase of the confining potential width rather than the potential height. The presented finite element code can be further used to analysis the transverse or vertical coupled quantum dot molecule.

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