Facile capping CdS and ZnS shells by thermolysis of ethylxanthate precursors for CdSe/CdS/ZnS nanocrystals

被引：5
作者：
Ge, Meiying [1 ]
Yue, Yang [1 ]
Liu, Yufeng [1 ]
Wu, Jie [1 ]
Sun, Yan [1 ]
Chen, Xin [1 ]
Dai, Ning [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Tech Phys, Natl Lab Infrared Phys, Shanghai 200083, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2011年 / 384卷 / 1-3期
关键词：
CdSe nanocrystals; CdSe/CdS/ZnS nanocrystals; Ethylxanthate; Core/shell; LIGHT-EMITTING-DIODES; CORE/SHELL NANOCRYSTALS; SINGLE; SULFIDE; LIGAND; GROWTH; SIZE;
D O I：
10.1016/j.colsurfa.2011.05.014
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We described the tunable CdS and ZnS shells by facile thermolysis of air-stable cadmium ethylxanthate (Cd(ex)(2)) and zinc ethylxanthate (Zn(ex)(2)) precursors for CdSe/CdS/ZnS core/shell nanocrystals (CCZ NCs). The use of Cd(ex)(2) and Zn(ex)(2) offered adjustable capping reaction temperature ranging from 175 degrees C to 255 degrees C for various CdSe core sizes and CdSanS shell thicknesses in CCZ NCs. Injection procedures of Cd(ex)(2) and Zn(ex)(2) precursors were flexible and optional within several seconds to tens of minutes for the capping process. All these revealed a feasible route to coat CdS and ZnS shells on nanocrystals for manipulating the structure, surface and optical characterizations. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：574 / 579
页数：6
相关论文
共 35 条
  • [1] Photochemical instability of CdSe nanocrystals coated by hydrophilic thiols
    Aldana, J
    Wang, YA
    Peng, XG
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (36) : 8844 - 8850
  • [2] Semiconductor nanocrystals as fluorescent biological labels
    Bruchez, M
    Moronne, M
    Gin, P
    Weiss, S
    Alivisatos, AP
    [J]. SCIENCE, 1998, 281 (5385) : 2013 - 2016
  • [3] ELECTRONIC WAVE-FUNCTIONS IN SEMICONDUCTOR CLUSTERS - EXPERIMENT AND THEORY
    BRUS, L
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (12) : 2555 - 2560
  • [4] Quantum dot bioconjugates for ultrasensitive nonisotopic detection
    Chan, WCW
    Nie, SM
    [J]. SCIENCE, 1998, 281 (5385) : 2016 - 2018
  • [5] Electroluminescence from single monolayers of nanocrystals in molecular organic devices
    Coe, S
    Woo, WK
    Bawendi, M
    Bulovic, V
    [J]. NATURE, 2002, 420 (6917) : 800 - 803
  • [6] (CdSe)ZnS core-shell quantum dots: Synthesis and characterization of a size series of highly luminescent nanocrystallites
    Dabbousi, BO
    RodriguezViejo, J
    Mikulec, FV
    Heine, JR
    Mattoussi, H
    Ober, R
    Jensen, KF
    Bawendi, MG
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (46) : 9463 - 9475
  • [7] Colloidal CdSe nanocrystals synthesized in noncoordinating solvents with the addition of a secondary ligand: Exceptional growth kinetics
    Dai, Quanqin
    Li, Dongmei
    Chen, Haiyong
    Kan, Shihai
    Li, Hongdong
    Gao, Shiyong
    Hou, Yuanyuan
    Liu, Bingbing
    Zou, Guangtian
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (33) : 16508 - 16513
  • [8] Air-stable all-inorganic nanocrystal solar cells processed from solution
    Gur, I
    Fromer, NA
    Geier, ML
    Alivisatos, AP
    [J]. SCIENCE, 2005, 310 (5747) : 462 - 465
  • [9] PHOTOCHEMISTRY OF COLLOIDAL CADMIUM-SULFIDE .2. EFFECTS OF ADSORBED METHYL VIOLOGEN AND OF COLLOIDAL PLATINUM
    HENGLEIN, A
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1982, 86 (13) : 2291 - 2293
  • [10] Synthesis and characterization of strongly luminescing ZnS-Capped CdSe nanocrystals
    Hines, MA
    Guyot-Sionnest, P
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (02) : 468 - 471
1234