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Preparation and characterization of monodispersed PbSe nanocubes
Author(s) -
Wang Xinjun,
Li Ke,
Dong Yutao,
Jiang Kai
Publication year - 2010
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200900501
Subject(s) - hydrothermal circulation , photoluminescence , nanomaterials , luminescence , morphology (biology) , materials science , chemical engineering , nanotechnology , nanocrystal , characterization (materials science) , chemistry , nuclear chemistry , optoelectronics , biology , engineering , genetics
Monodispersed PbSe nanocubes were synthesized through a simple hydrothermal method by using Pb 2+ ‐EDTA complex and Na 2 SeSO 3 . Composition and morphology of the samples were characterized by means of XRD, TEM and SEM. The gradually releasing of Pb 2+ from Pb 2+ ‐EDTA complex, and the adopting of PVP can adjust the growth rate in <100> and <111> directions of PbSe. Both Pb 2+ ‐EDTA complex and PVP played important roles in the crystal growth of the monodispersed PbSe nanocubes. In addition, UV‐vis and photoluminescence properties were characterized. E g of the PbSe nanocubes is 1.5 eV approximately, which is much larger than that of bulk PbSe. Under PL excitation at 406 nm, a red emission peak at 696 nm is observed, showing that the synthesized PbSe is luminescent nanomaterials. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)