Improved optical properties of US quantum dots by ligand exchange

被引：50

作者：

Comparelli, R

Zezza, F

Striccoli, M ^{[1
]}

Curri, ML

Tommasi, R

Agostiano, A

机构：

[1] Univ Bari, CNR, IPCF, Sez Bari,Dip Chim, Bari, Italy

[2] Univ Bari, DETO, I-70126 Bari, Italy

[3] Univ Bari, INFM, I-70126 Bari, Italy

来源：

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2003年 / 23卷 / 6-8期

关键词：

CdS quantum dots; capping exchange; colloidal nanocrystals; photoluminescence; photoluminescence excitation;

D O I：

10.1016/j.msec.2003.09.121

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-quality CdS nanocrystals with highly efficient and narrow band edge emission have been prepared by means of decomposition of suitable precursors in non-coordinating solvents at high temperature. The role played by capping ligands, solvents and their interactions has been investigated by optical measurements. Capping layer exchange treatments with different amines have been carried out suggesting a possible influence of alkylic chain length in modifying the optical properties of CdS nanocrystals. Enhancement of band edge emission has been demonstrated with octylamine ligand. (C) 2003 Elsevier B.V. All rights reserved.

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收藏

页码：1083 / 1086

页数：4

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