Synthesis of Monodisperse PbSe Nanorods: A Case for Oriented Attachment

被引：195

作者：

Koh, Weon-kyu ^{[1
]}

Bartnik, Adam C. ^{[3
]}

Wise, Frank W. ^{[3
]}

Murray, Christopher B. ^{[1
,2
]}

机构：

[1] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA

[2] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[3] Cornell Univ, Sch Appl & Engn Phys, Ithaca, NY 14853 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 11期

基金：

美国国家科学基金会;

关键词：

COLLOIDAL CDSE NANORODS; SOLAR-CELLS; ELECTRONIC-STRUCTURE; OPTICAL-PROPERTIES; SHAPE CONTROL; QUANTUM DOTS; NANOCRYSTALS; NANOPARTICLES; NANOWIRES; SUPERLATTICES;

D O I：

10.1021/ja9105682

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Monodisperse, high-quality, single-crystal PbSe nanorods were synthesized in a catalyst-free, one-pot reaction using a new phosphine selenide precursor. PbSe nanorods were assembled to provide liquid-crystalline alignment or vertical alignment under controlled evaporation conditions. The growth of nanorods was monitored by TEM and absorption spectroscopy, indicating that oriented attachment could be involved to provide anisotropic PbSe nanostructures. In-plane XRD showed an enhanced (200) peak for PbSe nanorods, indicating the preferred alignment of nanorods on the substrates and their growth along the < 100 > direction. Absorption and emission spectra, along with lifetime measurements, show the differences between nanoscale PbSe spheres and rods.

引用

页码：3909 / 3913

页数：5

共 28 条

[1] Designing PbSe nanowires and nanorings through oriented attachment of nanoparticles [J].