Preparation and characterization of monodispersed PbSe nanocubes

✍ Scribed by Xinjun Wang; Ke Li; Yutao Dong; Kai Jiang

• Book ID: 102125732
• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 195 KB
• Volume: 45
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.200900501

✦ Synopsis

Abstract

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)