Size-tunable near-infrared PbS nanoparticles synthesized from lead carboxylate and sulfur with oleylamine as stabilizer

被引：43

作者：

Liu, Jincheng ^{[1
]}

Yu, Huangzhong ^{[1
]}

Wu, Zhonglian ^{[1
]}

Wang, Wenli ^{[1
]}

Peng, Junbiao ^{[1
]}

Cao, Yong ^{[1
]}

机构：

[1] S China Univ Technol, Inst Polymer Optoelect Mat & Devices, Key Lab Special Funct Mat, Minist Educ, Guangzhou 510640, Peoples R China

来源：

NANOTECHNOLOGY | 2008年 / 19卷 / 34期

关键词：

D O I：

10.1088/0957-4484/19/34/345602

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High quality PbS nanocrystals are synthesized reproducibly through lead stearate and sulfur stabilized by oleylamine in a non-coordinating solvent. The morphology, crystalline form and phase composition of PbS nanocrystals are examined by transmission electron microscopy (TEM), high-resolution TEM, x-ray diffraction (XRD), energy-dispersive x-ray spectroscopy (EDS) and x-ray photoelectron spectroscopy (XPS). The as-synthesized PbS nanocrystals have strong absorption and photoluminescence emissions in the near-infrared region. The size of PbS nanocrystals from 5 to 13 nm can be adjusted through the optimization of the synthesis conditions. The smaller PbS nanoparticles are obtained at the lower reaction temperature, lower precursor concentration, larger oleylamine quantity and larger lead precursor/sulfur ratio. The basic oleylamine enhances the reactivity of both lead stearate precursor and sulfur precursor in the reaction.

引用

页数：9

共 44 条

[31] Infrared quantum dots [J].