Efficient synthesis of PbTe nanoparticle networks
Lead telluride, nanoparticle, network, core shell structures, thermoelectric, carbohydrate
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.
Tsinghua University Press
Qiangfeng Xiao,Ding Weng,Zhenglong Yang,Javier Garay,Minjuan Zhang,Yunfeng Lu, Efficient synthesis of PbTe nanoparticle networks. NanoRes.2010, 3(10): 685–693