Hydrogenic donor impurity in InAs/GaAs core/shell quantum dots: effect of the dielectric environnement

被引：0
作者：
El Haouari, M. [1 ,2 ]
Feddi, E. [1 ]
Talbi, A. [1 ,3 ]
机构：
[1] Mohamed V Univ Rabat, ENSET, Grp Optoelect Boites Quant Semicond, Rabat, Morocco
[2] Univ Ibn Tofail, Fac Sci, CRMEF, BP 133, Kenitra 14000, Morocco
[3] Univ Ibn Tofail, Fac Sci, Lab Optoelect & Physicochim Mat, BP 133, Kenitra 14000, Morocco
来源：
2016 INTERNATIONAL CONFERENCE ON ELECTRICAL AND INFORMATION TECHNOLOGIES (ICEIT) | 2016年
关键词：
Group III-V; semiconductors; core/shell quantum dots; single dopant; binding energy; dielectric mismatch; ELECTRONIC-PROPERTIES; MAGNETIC-FIELD; NANODOTS; MISMATCH; STATES;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Groupe III-V semiconductors are well known for their electronics and optical properties. For instance, GaAs semiconductor, which has a direct band gap is used in several important applications such as light-emitting diodes, laser diodes and optical detectors. This work present a theoretical investigation on the binding energy of an off-center single dopant in InAs/GaAs core/shell quantum dots embedded in a glace matrix. The energies with and without the dielectric mismatch are determined in the framework of the effective mass approximation by using the Ritz variational approach. It has been found that the influence of image charge affect considerably the binding energy and the probability densities and it is more pronounced in strong spatial confinement.
引用
收藏
页码：266 / 269
页数：4
相关论文
共 17 条
[1]  
Bimberg D., 1998, QUANTUM DOT HETEROST, P8
[2]   Hydrogenic impurity states in CdSe/ZnS and ZnS/CdSe core-shell nanodots with dielectric mismatch [J].
Cristea, M. ;
Niculescu, E. C. .
EUROPEAN PHYSICAL JOURNAL B, 2012, 85 (06)
[3]   Off-center shallow donors in a spherical Si quantum dot with dielectric border [J].
Cristea, M. ;
Niculescu, E. C. .
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY, 2012, 112 (06) :1737-1745
[4]  
DELERUE C, 2004, NANOSTRUCUTRES THEOR
[5]   Effect of a lateral electric field on an off-center single dopant confined in a thin quantum disk [J].
Dujardin, F. ;
Oukerroum, A. ;
Feddi, E. ;
Bailach, J. Bosch ;
Martinez-Pastor, J. ;
Zazi, M. .
JOURNAL OF APPLIED PHYSICS, 2012, 111 (03)
[6]  
Esaki L., 1987, NATO ASI SERIES B, V170
[7]   Magnetic field effect on the polarizability of bound polarons in quantum nanocrystallites -: art. no. 235313 [J].
Feddi, E ;
El Haouari, M ;
Assaid, E ;
Stébé, B ;
El Khamkhami, J ;
Dujardin, F .
PHYSICAL REVIEW B, 2003, 68 (23)
[8]   Magnetic field influence on the polarisability of donors in quantum crystallites [J].
Feddi, E ;
Assaid, E ;
Dujardin, F ;
Stébé, B ;
Diouri, J .
PHYSICA SCRIPTA, 2000, 62 (01) :88-91
[9]  
GOI AR, 1990, PHYS REV B, V41, P10104
[10]  
Haouari M. El, IEEE ICEIT 2015
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