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

被引：40

作者：

Zhang, WX

Zhang, L

Cheng, YW

Hui, ZH

Zhang, XM

Xie, Y

Qian, YT ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Struct Res Lab, Hefei 230026, Anhui, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2000年 / 35卷 / 12期

基金：

中国国家自然科学基金;

关键词：

chalcogenides; semiconductors; chemical synthesis; X-ray diffraction; surface properties;

D O I：

10.1016/S0025-5408(00)00398-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Reaction of a sulfur, selenium, or tellurium alkaline aqueous solution and Pb(CH3COO)(2). 3H(2)O 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. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：2009 / 2015

页数：7

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