Electron-hole excitations in CdSe quantum dots under strong and intermediate confinement conditions

被引：9
|
作者：
Karpov, S. V. [1 ]
Mikushev, S. V. [1 ]
机构：
[1] St Petersburg State Univ, Fock Inst Phys, St Petersburg 198904, Russia
来源：
PHYSICS OF THE SOLID STATE | 2010年 / 52卷 / 08期
关键词：
OPTICAL-PROPERTIES; SEMICONDUCTOR MICROCRYSTALS; SIZE DEPENDENCE; NANOCRYSTALS; GLASSES; ABSORPTION; DYNAMICS; SURFACE; MATRIX; CDTE;
D O I：
10.1134/S1063783410080287
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The absorption spectrum of cadmium selenide nanocrystals in a glassy fluorophosphate matrix has been investigated in the vicinity of the fundamental absorption edge 400-650 nm. The revealed oscillations of the absorption have been interpreted as a manifestation of the quantum-well effect for electrons and holes under strong and intermediate confinement conditions. The data obtained have demonstrated that the individual discrete confinement states arise from the band and exciton states of the bulk crystal. The results are in good agreement with those obtained from theoretical consideration of the intermediate confinement model.
引用
收藏
页码：1750 / 1756
页数：7
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