Characterization of mechanochemically synthesized lead selenide |
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Authors: | Marcela Achimovičová Nina Daneu Aleksander Rečnik Juraj Ďurišin Baláž Peter Martin Fabián Jaroslav Kováč Alexander Šatka |
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Institution: | Marcela Achimovičová, Nina Daneu, Aleksander Rečnik, Juraj Ďurišin, Baláž Peter, Martin Fabián, Jaroslav Kováč and Alexander Šatka |
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Abstract: | Mechanochemical synthesis of lead selenide PbSe nanocrystals was performed by high-energy milling of lead and selenium powders
in a planetary ball mill. The structure properties of synthesized lead selenide were characterized by XRD analysis that confirmed
crystalline nature of PbSe nanocrystals. Calculated average size of PbSe crystallites was 37 nm. The methods of particle size
distribution analysis, specific surface area measurement, SEM and TEM were used for the characterization of surface and morphology
of PbSe nanocrystals. SEM analysis revealed agglomerates of PbSe particles. However, HRTEM analysis confirmed perfect stoichiometric
PbSe cubes with NaCl structure as well. UV-VIS-NIR spectrophotometry was used to confirm the blue shift of the small particles
occurring in the powder product obtained by the mechanochemical synthesis.
Presented at the 8th Conference on Solid State Chemistry, Bratislava, Slovakia, 6–11 July 2008. |
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Keywords: | lead selenide mechanochemical synthesis nanoparticle semiconductor |
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