Article Title

Efficient synthesis of PbTe nanoparticle networks

Authors

Qiangfeng Xiao, Chemical and Biomolecular Engineering Department, University of California, Los Angeles, CA 90095, USA
Ding Weng, Chemical and Biomolecular Engineering Department, University of California, Los Angeles, CA 90095, USA
Zhenglong Yang, Chemical and Biomolecular Engineering Department, University of California, Los Angeles, CA 90095, USA
Javier Garay, Mechanical Engineering Department, University of California, Riverside, CA 92521, USA
Minjuan Zhang, Materials Research Department, Toyota Motor Engineering and Manufacturing North America, Inc., 1555 Woodridge Ave. Ann Arbor, MI 48105, USA
Yunfeng Lu, Chemical and Biomolecular Engineering Department, University of California, Los Angeles, CA 90095, USA

Keywords

Lead telluride, nanoparticle, network, core shell structures, thermoelectric, carbohydrate

Abstract

The synthesis of semiconductor nanocrystalline networks using weak capping ligands in aqueous media has been demonstrated. Carbohydrates, including β-cyclodextrin, D-(+)-glucose, D-glucosamine, lactobionic acid, sucrose, and starch were chosen as weak ligands to facilitate the formation of PbTe nanoparticle networks. The nanoparticle size, ranging from 5 nm to 30 nm, can be tuned by manipulating the temperature and concentration. Through a similar strategy, more complicated nanostructures including carbohydrate spheres@PbTe core–shell structures and Te@carbohydrate@PbTe multilayered submicron cables have been fabricated. This is a general approach which can be easily extended to the fabrication of other semiconductor networks, including PbSe and Bi2Te3 using carbohydrates and ethylenediaminetetraacetic acid (EDTA), respectively, as ligands.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-010-0030-8

Publisher

Tsinghua University Press

Recommended Citation

Qiangfeng Xiao,Ding Weng,Zhenglong Yang,Javier Garay,Minjuan Zhang,Yunfeng Lu, Efficient synthesis of PbTe nanoparticle networks. NanoRes.2010, 3(10): 685–693