Synthesis of nanocrystalline lead chalcogenides PbE (E = S, Se, or Te) from alkaline aqueous solutions

Reaction of a sulfur, selenium, or tellurium alkaline aqueous solution and Pb(CH 3COO) 2·3H 2O aqueous solution produces nanocrystalline lead chalcogenides PbE (E = S, Se, or Te) with a cubic phase at low temperature under atmospheric pressure. The products are characterized through X-ray diffractio...

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Bibliographic Details
Published in:Materials research bulletin 2000-09, Vol.35 (12), p.2009-2015
Main Authors: Zhang, Weixin, Zhang, Lei, Cheng, Youwei, Hui, Zehua, Zhang, Xiaoming, Xie, Yi, Qian, Yitai
Format: Article
Language:English
Subjects:
A. Chalcogenides
A. Semiconductors
B. Chemical synthesis
C. X-ray diffraction
Cross-disciplinary physics: materials science
rheology
D. Surface properties
Exact sciences and technology
Growth from solutions
Materials science
Methods of crystal growth
physics of crystal growth
Nanoscale materials and structures: fabrication and characterization
Physics
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Summary:Reaction of a sulfur, selenium, or tellurium alkaline aqueous solution and Pb(CH 3COO) 2·3H 2O aqueous solution produces nanocrystalline lead chalcogenides PbE (E = S, Se, or Te) with a cubic phase at low temperature under atmospheric pressure. The products are characterized through X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) analysis. The average particle size is in the range 20–35 nm. The XPS analysis indicates that the stability of the product surface in air decreases in the order PbS, PbSe, and PbTe. An advantage of this synthesis method is that the PbE crystallizes well in the alkaline solution. The mechanism for the formation of the lead chalcogenides is discussed.
ISSN:0025-5408
1873-4227
DOI:10.1016/S0025-5408(00)00398-6