Temperature dependence of optical properties and size tunability CdSe quantum dots via non-TOP synthesis

被引：24

作者：

Wang, Chun ^{[1
]}

Jiang, Yang ^{[1
]}

Chen, Lanlan ^{[1
]}

Li, Shanying ^{[1
]}

Li, Guohua ^{[1
]}

Zhang, Zhongping ^{[1
,2
]}

机构：

[1] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Anhui, Peoples R China

[2] Chaohu Univ, Dept Chem, Chaohu 238000, Anhui, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2009年 / 116卷 / 2-3期

基金：

国家高技术研究发展计划(863计划);

关键词：

Chalcogenides; Visible and ultraviolet spectrometers; Luminescence; Nucleation; PHOSPHINE-FREE SYNTHESIS; SEMICONDUCTOR NANOCRYSTALS; GROWTH; PHOTOLUMINESCENCE; NANOPARTICLES; LUMINESCENCE; MECHANISM; DEVICES; ROUTE; CDTE;

D O I：

10.1016/j.matchemphys.2009.03.041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-quality CdSe quantum dots with less common zinc blende structure were prepared in non-coordinating solvent 1-octadecene, with environment-friendly N,N-dimethyl-oleoyl amide as an alternative chemical to replace trioctylphoshine for Se powder, oleic acid as primary capping ligands, and benzophenone as secondary ligands. The temporal evolution of the optical properties of the nanocrystals with different growth temperature was monitored. Significant redshifts occurred with the increase of the growth temperature. The sharpness of the first absorption peaks and the narrow emission band with full width at the half-maximum of about 30 nm indicates that the size distribution of the resulting quantum dots is narrow. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：388 / 391

页数：4

共 32 条

[1] Photochemical instability of CdSe nanocrystals coated by hydrophilic thiols [J].

Aldana, J ;

Wang, YA ;

Peng, XG .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (36) :8844-8850

[2] The use of heat transfer fluids in the synthesis of high-quality CdSe quantum dots, core/shell quantum dots, and quantum rods [J].

Asokan, S ;

Krueger, KM ;

Alkhawaldeh, A ;

Carreon, AR ;

Mu, ZZ ;

Colvin, VL ;

Mantzaris, NV ;

Wong, MS .

NANOTECHNOLOGY, 2005, 16 (10) :2000-2011

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

Bruchez, M ;

Moronne, M ;

Gin, P ;

Weiss, S ;

Alivisatos, AP .

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

[4] Nucleation and growth kinetics of CdSe nanocrystals in octadecene [J].

Bullen, CR ;

Mulvaney, P .

NANO LETTERS, 2004, 4 (12) :2303-2307

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

Chan, WCW ;

Nie, SM .

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

[6] Electroluminescence from single monolayers of nanocrystals in molecular organic devices [J].

Coe, S ;

Woo, WK ;

Bawendi, M ;

Bulovic, V .

NATURE, 2002, 420 (6917) :800-803

[7]

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

[8] A new route to zinc-blende CdSe nanocrystals: Mechanism and synthesis [J].

Deng, ZT ;

Cao, L ;

Tang, FQ ;

Zou, BS .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (35) :16671-16675

[9] Doping semiconductor nanocrystals [J].

Erwin, SC ;

Zu, LJ ;

Haftel, MI ;

Efros, AL ;

Kennedy, TA ;

Norris, DJ .

NATURE, 2005, 436 (7047) :91-94

[10] Mechanism of aqueous ultrasonic reaction: controlled synthesis, luminescence properties of amorphous cluster and nanocrystalline CdSe [J].

Ge, JP ;

Li, YD ;

Yang, GQ .

CHEMICAL COMMUNICATIONS, 2002, (17) :1826-1827

← 1 2 3 4 →