Novel two-dimensional lead sulfide quadrangular pyramid-aggregated arrays with self-supporting structure prepared at room temperature

被引：0

作者：

Hu, Hanmei ^{[1
,2
]}

Deng, Chonghai ^{[3
]}

Zhang, Kehua ^{[1
]}

Sun, Mei ^{[1
]}

Xuan, Han ^{[1
]}

Kong, Shangshang ^{[1
]}

机构：

[1] Anhui Univ Architecture, Sch Mat & Chem Engn, Hefei 230022, Peoples R China

[2] Anhui Univ Architecture, Anhui Key Lab Adv Bldg Mat, Hefei 230022, Peoples R China

[3] Hefei Univ, Dept Chem & Mat Engn, Hefei 230022, Peoples R China

来源：

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2013年 / 16卷 / 06期

基金：

中国国家自然科学基金;

关键词：

PbS; Self-supporting structure; Nanocrystalline materials; Optical property; PBS NANOCRYSTALS; GROWTH; NANOSTRUCTURES; DENDRITES; NANOCUBES; DYNAMICS;

D O I：

10.1016/j.mssp.2013.06.003

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Two dimensional (2D) self-supporting lead sulfide (PbS) arrays composed of ordered quadrangular nanopyramids were successfully fabricated through a convenient wet-chemical route at room temperature. The as-synthesized products were characterized by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, UV-vis-NIR absorption and photoluminescence spectroscopy. The as-prepared highly ordered self-supporting superstructures are stable under ultrasonic conditions. A "template-mediated in situ growth" mechanism is proposed for the formation of 2D PbS superstructures. With the prolongation of reaction time, the morphology evolution of PbS is clearly observed, which could be changed from nanopyramid-aggregated arrays into nanocube-aggregated arrays at original position. The optical properties of PbS self-supporting superstructures are investigated in detail. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：1566 / 1572

页数：7