Title :
A simple synthesis and characterization of PbTe nano-particles
Author :
Hong-Quan Liu ; Fei-Xiang Hao ; Jie Guo ; Yi-Jie Gu ; Qing-Kun He ; Hong-Zhi Cui
Author_Institution :
Coll. of Mater. Sci. & Eng., Shandong Univ. of Sci. & Technol., Qingdao, China
fDate :
Aug. 29 2012-Sept. 1 2012
Abstract :
PbTe nanopowders with different morphology were prepared by a simple chemical synthesis. Similar cubic nanoparticles have been successfully synthesized by using Pb(NO3)2 and Na2TeO3 as the precursors, and NaBH4 as the reductant. The single PbTe phase is confirmed from XRD pattern, and obvious width of XRD peaks occur. The size of powders is distributed from 20nm to 70nm in a typical process according to observation from SEM and TEM images. Based on HRTEM observation, PbTe nanopowders with an amorphous layer show polyhedron feature. In different crystallization stages, there is different morphology due to competition between surface energy and crystal face energy. The globular, polyhedron and cubic particles belongs to different growth stages, respectively. Possible growth mechanisms of PbTe were also discussed.
Keywords :
X-ray diffraction; crystal faces; crystallisation; lead compounds; nanofabrication; nanoparticles; narrow band gap semiconductors; powders; scanning electron microscopy; semiconductor growth; surface energy; transmission electron microscopy; HRTEM; PbTe; PbTe growth mechanisms; PbTe nanoparticle characterization; PbTe nanoparticle synthesis; PbTe nanopowders; SEM image; TEM image; XRD pattern; XRD peak width; amorphous layer; chemical synthesis; crystal face energy; crystallization stages; cubic nanoparticles; globular particles; growth stages; polyhedron particles; powder size; single PbTe phase; surface energy; Crystals; Morphology; Nanoparticles; Powders; Surface morphology; X-ray scattering; Chemical Synthesis; Morphology; Nano-particles; PbTe;
Conference_Titel :
Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO), 2012 International Conference on
Conference_Location :
Shaanxi
Print_ISBN :
978-1-4673-4588-0
Electronic_ISBN :
978-1-4673-4589-7
DOI :
10.1109/3M-NANO.2012.6473010
