Synthesis of CdS, ZnS, and CdS/ZnS Core/Shell Nanocrystals Using Dodecanethiol

被引:21
|
作者
Niu, Jinzhong [1 ,2 ]
Xu, Weiwei [1 ]
Shen, Huaibin [1 ]
Li, Sen [1 ]
Wang, Hongzhe [1 ]
Li, Lin Song [1 ]
机构
[1] Henan Univ, Minist Educ, Key Lab Special Funct Mat, Kaifeng 475004, Peoples R China
[2] Henan Inst Engn, Dept Math & Phys Sci, Zhengzhou 451191, Peoples R China
来源
关键词
CdS; ZnS; Nanocrystals; Dodecanethiol; QUANTUM DOTS; LUMINESCENCE; CDTE; SE;
D O I
10.5012/bkcs.2012.33.2.393
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We report a new route to synthesize high quality zinc blende CdS and ZnS nanocrystals in noncoordinating solvent 1-octadecene, using dodecanethiol (DDT) molecules as both the sulfur source and surface capping ligands. Different reaction temperatures and Cd(Zn)/DDT molar ratios were tested to optimize the synthesis conditions. Absorption photoluminescence (PL) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) pattern, and transmission electron microscopy (TEM) were used to characterize assynthesized nanocrystals. The narrow half width at the half-maximum on the long wavelength side of the first-excitonic absorption peak and TEM images demonstrated nearly monodisperse size distributions of asprepared CdS, ZnS, and CdS/ZnS core/shell nanocrystals. Only trap emissions of the nanocrystals were detected when the amount of DDT was excessive, this came from the strong quenching effect of thiol groups on the nanocrystal surfaces. After overcoating with ZnS shells, band-gap emissions of CdS nanocrystals were partially recovered.
引用
收藏
页码:393 / 397
页数:5
相关论文
共 50 条
  • [21] Synthesis and optical and electrical properties of CdS/ZnS Core/Shell nanorods
    Datta, Anuja
    Panda, Subhendu K.
    Chaudhuri, Subhadra
    JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (46): : 17260 - 17264
  • [22] Linear and nonlinear photophysical properties of ZnSe/CdS/ZnS core/shell/shell type Ⅱ nanocrystals
    YANG GAO
    XIN QIU
    FULI ZHAO
    SHUYU XIAO
    JUNZI LI
    XIAODONG LIN
    RUI CHEN
    TINGCHAO HE
    Photonics Research, 2020, 8 (09) : 1416 - 1421
  • [23] Electroluminescent properties of device based on ZnS:Tb/CdS core-shell nanocrystals
    Hua, RN
    Niu, JH
    Li, MT
    Yu, TZ
    Li, WL
    CHEMICAL PHYSICS LETTERS, 2006, 419 (1-3) : 269 - 272
  • [24] Optical and structural characterization of CdS/ZnS and CdS:Cu2+/ZnS core-shell nanoparticles
    Murugadoss, G.
    Kumar, M. Rajesh
    LUMINESCENCE, 2014, 29 (06) : 663 - 668
  • [25] Photoluminescence depending on the ZnS shell thickness of CdS/ZnS core-shell semiconductor nanoparticles
    Loukanov, AR
    Dushkin, CD
    Papazova, KI
    Kirov, AV
    Abrashev, MV
    Adachi, E
    COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2004, 245 (1-3) : 9 - 14
  • [26] Growth of semiconducting nanocrystals of CdS and ZnS
    Viswanatha, Ranjani
    Sapra, Sameer
    Amenitsch, Heinz
    Sartori, Barbara
    Sarma, D. D.
    JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2007, 7 (06) : 1726 - 1729
  • [27] PREPARATION AND OPTICAL ABSORPTION PROPERTIES OF CDS, ZnS, ZnXCd1-XS AND CORE/SHELL CDS/ZNS NANOPARTICLES
    Praus, Petr
    Svoboda, Ladislav
    Horinkova, Petra
    NANOCON 2013, 5TH INTERNATIONAL CONFERENCE, 2014, : 243 - 247
  • [28] Linear and nonlinear photophysical properties of ZnSe/CdS/ZnS core/shell/shell type II nanocrystals
    Gao, Yang
    Qiu, Xin
    Zhao, Fuli
    Xiao, Shuyu
    Li, Junzi
    Lin, Xiaodong
    Chen, Rui
    He, Tingchao
    PHOTONICS RESEARCH, 2020, 8 (09) : 1416 - 1421
  • [29] Facile Synthesis and Luminescence Characteristics of High-Quality CdS: Eu/ZnS Core/Shell Nanocrystals with Biocompatibility
    Zhang, Kexin
    Zhang, Rui
    Yu, Yaxin
    Sun, Shuqing
    JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2012, 12 (04) : 3011 - 3017
  • [30] Shape-Controlled CdS/ZnS Core/Shell Heterostructured Nanocrystals: Synthesis, Characterization, and Periodic DFT Calculations
    Zhai, Xiaoman
    Zhang, Rubo
    Lin, Jialun
    Gong, Yunqian
    Tian, Yafen
    Yang, Wen
    Zhang, Xiaoling
    CRYSTAL GROWTH & DESIGN, 2015, 15 (03) : 1344 - 1350