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The off-stoichiometry effect on the optical properties of water-soluble copper indium zinc sulfide quantum dots
Xu, Yanqiao1; Chen, Ting1,2; Hu, Xiaobo1; Jiang, Wan2,3; Wang, Lianjun2,3; Jiang, Weihui1,2; Liu, Jianmin2
2017
Source PublicationJournal of Colloid and Interface Science
ISSN00219797
Volume496Pages:479-486
AbstractCu[sbnd]In[sbnd]Zn[sbnd]S quantum dots (CIZS QDs) were prepared via reflux method in aqueous solution using CuCl2·2H2O, InCl3·4H2O, Zn(OAc)2·2H2O and Na2S·9H2O as raw materials, L-glutathione (GSH) and sodium citrate (SC) as stabilizing agents, respectively. The effects of off-stoichiometry (Cu/In and Zn/Cu ratios) on the crystal structure and morphology were systematically studied by means of X-ray diffraction (XRD) and high-resolution transmission electron microscope (HRTEM), and the relative optical properties were also investigated by absorption and fluorescence spectra. The as-prepared water-dispersible CIZS QDs were around 3–4 nm and possessed the tetragonal chalcopyrite crystal structure. The photoluminescence (PL) intensity of QDs was significantly increased with decreasing the Cu/In ratio. Compared with the Cu/In ratio variation, changing Zn/Cu ratio was an effective strategy to realize a more uniform irradiation and a wide range of emission wavelength tunability. © 2017 Elsevier Inc.
DOI10.1016/j.jcis.2017.02.049
EI Accession Number20170903402287
EI KeywordsSemiconductor quantum dots
EI Classification Number714.2 Semiconductor Devices and Integrated Circuits - 741.1 Light/Optics - 761 Nanotechnology - 801.4 Physical Chemistry - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 933.1.1 Crystal Lattice
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25915
Collection中国科学院上海硅酸盐研究所
Affiliation1.School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen; 333001, China;
2.National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen; 333001, China;
3.State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai; 201620, China
Recommended Citation
GB/T 7714
Xu, Yanqiao,Chen, Ting,Hu, Xiaobo,et al. The off-stoichiometry effect on the optical properties of water-soluble copper indium zinc sulfide quantum dots[J]. Journal of Colloid and Interface Science,2017,496:479-486.
APA Xu, Yanqiao.,Chen, Ting.,Hu, Xiaobo.,Jiang, Wan.,Wang, Lianjun.,...&Liu, Jianmin.(2017).The off-stoichiometry effect on the optical properties of water-soluble copper indium zinc sulfide quantum dots.Journal of Colloid and Interface Science,496,479-486.
MLA Xu, Yanqiao,et al."The off-stoichiometry effect on the optical properties of water-soluble copper indium zinc sulfide quantum dots".Journal of Colloid and Interface Science 496(2017):479-486.
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