Preparation and structural properties of PbSe nanomaterial

Abstract

Lead selenide nanostrucured material was prepared by hydrothermal method. 50 mg of PEG and 2.4 g of NaOH were added to 50 ml of deionized water, then 1 mM each of NaSeO3 and PbAc were added to the solution. 10 ml of hydrazine hydrate was added to the solution and transferred into a Teflon-lined autoclave. The reactants were heated for 9, 10 and 11 h. This process was repeated twice the prementioned concentration. X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analyses were carried out for the prepared powdered material. The crystallite size was determined from the X-ray diffraction and found to be in the nanometer size range. Transmission electron microscopy and electron diffraction were carried out for PbSe films prepared from ultrasonically dispersed PbSe suspension. The interplanar spacings, d (A • ) were determined from the obtained electron diffraction. The most suitable preparation condition is 10 h heating time, and the previously reported reactants concentration, since in this condition were well formed nanocubes spread all over the TEM screen area were observed.

Investigation on structural, optical, morphological and electrical properties of thermally deposited lead selenide (PbSe) nanocrystalline thin films

“…Such a study will be useful to identify clearly the substrate temperature induced changes in physical properties of thermal evaporated PbSe films (using pre-synthesized PbSe nanocrystalline powders) for any technological applications. As mentioned above, the size and shape of the PbSe nanoparticles play an important role in the physical properties, such as structural, morphology, optical bandgap and nonlinear optical properties [24]. It can be pointed out that the ethylene Contents lists available at SciVerse ScienceDirect journal homepage: www.elsevier.com/locate/jcrysgro diamine tetra acetic acid (EDTA) is a strong chelating agent, to enhance the stable complexes between metal ions and to dissociate at low rate.…”

Room temperature synthesis of PbSe quantum dots in aqueous solution: stabilization by interactions with ligands

“…1,3,9 These approaches yield QDs capped with organic (hydrophobic) ligands that are not suitable for biological applications. Other non-aqueous syntheses reported for PbSe QDs involve the use of a microwave-assisted polyol process, 10 a hydrothermal process, 11 and a solvothermal synthesis using octadecylamine. 12 In these methods the final products are not only insoluble in water, but also the fabrication involves the use of toxic solvents that are not desirable for environmental and biological applications.…”

Dependence of the Structural, Electrical and Optical Properties of PbSe Nanomaterial Prepared by Hydrothermal Method on the Polyethylene Glycol Content

“…Besides, Wang et al [12] showed that the source materials and reaction temperature play important role in forming objective products and controlling their morphologies. In our previous report, face-open nanocubes of PbSe have been prepared by hydrothermal method [13]. It has been found that the morphology of the particles is influenced by the reaction time.…”