Optical properties of core/multishell CdSe/Zn(S,Se) nanocrystals

被引：31

作者：

Bleuse, J

Carayon, S

Reiss, P

机构：

[1] CEA, Dept Rech Fondamentale Mat Condensee, F-38054 Grenoble 9, France

[2] UJF, CNRS, CEA,Grp Nanophys & Semicond, Serv Phys Mat & Microstruct, Grenoble, France

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2004年 / 21卷 / 2-4期

关键词：

nanocrystal; CdSe; shell; ZnSe;

D O I：

10.1016/j.physe.2003.11.044

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

CdSe nanocrystals are now known as highly efficient fluorescent light sources. Their efficiency is however strongly dependent on the quality of the passivation layers. We show here that using a ZnSe/ZnS bi-layer shell leads to a larger photoluminescence yield than both ZnSe and ZnS simple shells. The intermediate ZnSe layer acts as a lattice parameter adaptation layer to improve on the core/shell interface quality, while the ZnS outer shell maximizes the exciton confinement. (C) 2003 Elsevier B.V. All rights reserved.

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收藏

页码：331 / 335

页数：5

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