Preparation and characterization of monodisperse PbSe semiconductor nanocrystals in a noncoordinating solvent

被引：398

作者：

Yu, WW ^{[1
]}

Falkner, JC ^{[1
]}

Shih, BS ^{[1
]}

Colvin, VL ^{[1
]}

机构：

[1] Rice Univ, Dept Chem, Houston, TX 77005 USA

来源：

CHEMISTRY OF MATERIALS | 2004年 / 16卷 / 17期

关键词：

D O I：

10.1021/cm049476y

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Spherical PbSe semiconductor nanocrystals with near-infrared absorption of 1100-2520 nm (corresponding to diameters of 3-13 nm) were synthesized in a noncoordinating solvent (1-octadecene). The as-prepared PbSe semiconductor nanocrystals have very narrow size distributions (sigma congruent to 5-7%) without any postsynthetic size selection. High-resolution transmission electron microscopy (TEM), electron diffraction, and X-ray diffraction show that the nanocrystalline particles are single domains of rock-salt PbSe. A water-soluble form of these materials was generated through simple surface treatments.

引用

页码：3318 / 3322

页数：5

共 38 条

[1] Photochemical instability of CdSe nanocrystals coated by hydrophilic thiols [J].