Influence of different stabilizers on the optical and nonlinear optical properties of CdTe nanoparticles

被引：36

作者：

Abd El-sadek, M. S. ^{[1
,2
]}

Nooralden, Ahmad Y. ^{[2
]}

Babu, S. Moorthy ^{[3
]}

Palanisamy, P. K. ^{[2
]}

机构：

[1] S Valley Univ, Fac Sci, Dept Phys, Nanomat Lab, Qena 83523, Egypt

[2] Anna Univ, Ctr Laser Technol, Dept Phys, Madras 600025, Tamil Nadu, India

[3] Anna Univ, Ctr Crystal Growth, Madras 600025, Tamil Nadu, India

来源：

OPTICS COMMUNICATIONS | 2011年 / 284卷 / 12期

关键词：

CdTe nanocrystals; Optical properties; Nonlinear refraction index; Nonlinear materials; Z-scan technique; FT-IR spectroscopy; Z-SCAN; QUANTUM DOTS; SEMICONDUCTOR NANOCRYSTALS; AQUEOUS-PHASE; PHOTOLUMINESCENCE; SOLIDS;

D O I：

10.1016/j.optcom.2011.01.071

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

CdTe semiconductor nanocrystals were synthesized with three different stabilizers: Mercaptoacetic Acid (MM), Mercaptopropionic Acid (MPA) and 2-Mercaptoethanol (ME) at pH approximate to 11.2 by wet chemical route using potassium tellurite and cadmium chloride as starting materials. The effect of capping agent on the preparation of these samples was evaluated using UV-Visible absorption and photoluminescence analysis. With the same reaction time but with different stabilizers, nanocrystals of different diameters were obtained. The average full width at half maximum of the photoluminescence spectra was about 69 nm which indicates that the monodispersity was quite good. The particle size was calculated by Debye-Scherrer equation from XRD data. Further characterization studies such as FT-IR and optical nonlinearity studies on the samples were carried out and the results are discussed. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2900 / 2904

页数：5

共 32 条

[1] Perspectives on the physical chemistry of semiconductor nanocrystals [J].

Alivisatos, AP .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (31) :13226-13239

[2]

[Anonymous], CURRENT APPL PHYS

[3] Relations between the photoluminescence efficiency of CdTe nanocrystals and their surface properties revealed by synchrotron XPS [J].

Borchert, H ;

Talapin, DV ;

Gaponik, N ;

McGinley, C ;

Adam, S ;

Lobo, A ;

Möller, T ;

Weller, H .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (36) :9662-9668

[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] Substituent-dependence of the optical nonlinearities in poly(2,5-dialkoxy-p-phenylenevinylene) polymers investigated by the Z-scan technique [J].

Cassano, T ;

Tommasi, R ;

Ferrara, M ;

Babudri, F ;

Farinola, GM ;

Naso, F .

CHEMICAL PHYSICS, 2001, 272 (01) :111-118

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

Chan, WCW ;

Nie, SM .

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

[8]

Colthup N.B., 1990, Introduction to infrared and raman spectroscopy, P291

[9]

Colthup N.B., 1990, INTRO INFRARED RAMAN, P371

[10]

COLVIN VL, 1994, NATURE, V370, P354, DOI 10.1038/370354a0

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