Formation and spectroscopic characterization of nearly mono-dispersed Cds nanocrystals

被引：10

作者：

Miao, YM ^{[1
]}

Wu, ZY ^{[1
]}

Cao, L ^{[1
]}

Fu, LM ^{[1
]}

He, YP ^{[1
]}

Xie, SS ^{[1
]}

Zou, BS ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Nanoscale Phys & Device Lab, Beijing 100080, Peoples R China

来源：

OPTICAL MATERIALS | 2004年 / 26卷 / 01期

基金：

中国国家自然科学基金;

关键词：

mono-dispersed; nanocrystals; formation;

D O I：

10.1016/j.optmat.2004.01.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using the organic solvent method, nearly mono-dispersed CdS nanocrystals were obtained in liquid paraffin. The CdS nanocrystals in tetrahedron shape capped with the hydrophobic surfactants in nanometer scale can be assembled to a close-packed mono-layered structure. The CdS nanocrystals with different sizes have been prepared by changing the reaction conditions such as the concentrations of cadmium precursor and sulfur precursor, the initial ratio of Cd:S precursors and the pH value of reaction system. The UV-visible absorption and photoluminescence show the quantum confinement effect clearly. The time-resolved photoluminescence spectra have also been examined. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：71 / 74

页数：4

共 23 条

[1] Semiconductor clusters, nanocrystals, and quantum dots [J].

Alivisatos, AP .

SCIENCE, 1996, 271 (5251) :933-937

[2] Light trapped in a photonic dot: Microspheres act as a cavity for quantum dot emission [J].

Artemyev, MV ;

Woggon, U ;

Wannemacher, R ;

Jaschinski, H ;

Langbein, W .

NANO LETTERS, 2001, 1 (06) :309-314

[3]

BARBERAGUILLERN, Patent No. 6179912

[4] Semiconductor nanocrystals as fluorescent biological labels [J].

Bruchez, M ;

Moronne, M ;

Gin, P ;

Weiss, S ;

Alivisatos, AP .

SCIENCE, 1998, 281 (5385) :2013-2016

[5] ELECTRONIC WAVE-FUNCTIONS IN SEMICONDUCTOR CLUSTERS - EXPERIMENT AND THEORY [J].

BRUS, L .

JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (12) :2555-2560

[6] Quantum dot bioconjugates for ultrasensitive nonisotopic detection [J].

Chan, WCW ;

Nie, SM .

SCIENCE, 1998, 281 (5385) :2016-2018

[7] In vivo imaging of quantum dots encapsulated in phospholipid micelles [J].

Dubertret, B ;

Skourides, P ;

Norris, DJ ;

Noireaux, V ;

Brivanlou, AH ;

Libchaber, A .

SCIENCE, 2002, 298 (5599) :1759-1762

[8]

GROCER S, 1998, ELECTROCHIM ACTA, V43, P2799

[9] Quantum-dot-tagged microbeads for multiplexed optical coding of biomolecules [J].

Han, MY ;

Gao, XH ;

Su, JZ ;

Nie, S .

NATURE BIOTECHNOLOGY, 2001, 19 (07) :631-635

[10] Formation of monodispersed PVP-capped ZnS and CdS nanocrystals under microwave irradiation [J].

He, R ;

Qian, XF ;

Yin, J ;

Xi, HA ;

Bian, LJ ;

Zhu, ZK .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2003, 220 (1-3) :151-157

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