Research Article

Nano Research

, Volume 3, Issue 10, pp 685-693

Open Access This content is freely available online to anyone, anywhere at any time.

Efficient synthesis of PbTe nanoparticle networks

  • Qiangfeng XiaoAffiliated withChemical and Biomolecular Engineering Department, University of California
  • , Ding WengAffiliated withChemical and Biomolecular Engineering Department, University of California
  • , Zhenglong YangAffiliated withChemical and Biomolecular Engineering Department, University of California
  • , Javier GarayAffiliated withMechanical Engineering Department, University of California
  • , Minjuan ZhangAffiliated withMaterials Research Department, Toyota Motor Engineering and Manufacturing North America, Inc. Email author 
  • , Yunfeng LuAffiliated withChemical and Biomolecular Engineering Department, University of California Email author 

Abstract

The synthesis of semiconductor nanocrystalline networks using weak capping ligands in aqueous media has been demonstrated. Carbohydrates, including ?-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.

Keywords

Lead telluride nanoparticle network core shell structures thermoelectric carbohydrate