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http://dx.doi.org/10.5012/bkcs.2005.26.11.1803

Colloidal Synthesis of Octahedral Shaped PbSe Nanocrystals from Lead Oleate and Se : Temperature Effect  

Gokarna, Anisha (Chemical Technology Division, Korea Research Institute of Chemical Technology (KRICT))
Jun, Ki-Won (Chemical Technology Division, Korea Research Institute of Chemical Technology (KRICT))
Khanna, P.K. (Nanomaterials Laboratory, Centre for Materials for Electronics Technology (C-MET))
Baeg, Jin-Ook (Chemical Technology Division, Korea Research Institute of Chemical Technology (KRICT))
Seok, Sang-Il (Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT))
Publication Information
Abstract
Formation of octahedral shaped PbSe quantum dots at higher synthesis temperature is being reported in this paper. The synthesis includes the reaction between lead oleate and trioctylphosphine selenide under inert gas conditions to produce PbSe. TEM, SEM, XRD and EDS were used to characterize the samples. The SEM exhibited the formation of spherical shaped nanocrystals at temperature below 140 ${^{\circ}C}$ and octahedral shaped nanoparticles at higher temperatures. Moreover, the TEM also showed the well resolved (111) lattice fringes proving that the nanocrystals were crystalline in nature. Synthesis of highly pure PbSe nanocrystals was another interesting aspect of this research.
Keywords
Octahedral PbSe; Nanocrystals; Colloidal synthesis; Temperature effects; Lead oleate;
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