DIELECTRIC MISMATCH EFFECT ON THE ELECTRONIC STATES IN ZnS/CdSe CORE-SHELL QUANTUM DOTS UNDER APPLIED ELECTRIC FIELDS

被引：0

作者：

Niculescu, Ecaterina Cornelia ^{[1
]}

Cristea, Mihail ^{[1
]}

机构：

[1] Univ Politehn Bucuresti, Dept Phys, Bucharest, Romania

来源：

UNIVERSITY POLITEHNICA OF BUCHAREST SCIENTIFIC BULLETIN-SERIES A-APPLIED MATHEMATICS AND PHYSICS | 2013年 / 75卷 / 02期

关键词：

inverted core-shell quantum dots; dielectric mismatch; optical transitions; WELL;

D O I：

暂无

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

The lowest energy levels of electrons in ZnS/CdSe core-shell quantum dots under applied electric field are studied by using a finite element method. The calculations were performed within the effective mass approximation and taking into account the effect of the mismatch between the dielectric constants of the dot and barrier materials. Several configurations of the nanostructure sizes and electric field strengths have been considered. Our results suggest that the peak emission wavelengths associated with the 2p -> 1s transitions can be adjusted in a desired energy range by changing the structure parameters (dot radius, barrier material) as well as by varying the electric field strength.

引用

页码：195 / 204

页数：10

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