Synthesis and Characterization of Mn-Doped ZnO Nanocrystals

We report the synthesis and characterization of several sizes of Mn-doped ZnO nanocrystals, both in the free-standing and the capped particle forms. The sizes of these nanocrystals could be controlled by capping them with polyvinylpyrollidone under different synthesis conditions and were estimated b...

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Bibliographic Details
Published in:The journal of physical chemistry. B 2004-05, Vol.108 (20), p.6303-6310
Main Authors: Viswanatha, Ranjani, Sapra, Sameer, Sen Gupta, Subhra, Satpati, B, Satyam, P. V, Dev, B. N, Sarma, D. D
Format: Article
Language:English
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Summary:We report the synthesis and characterization of several sizes of Mn-doped ZnO nanocrystals, both in the free-standing and the capped particle forms. The sizes of these nanocrystals could be controlled by capping them with polyvinylpyrollidone under different synthesis conditions and were estimated by X-ray diffraction and transmission electron microscopy. The absorption properties of PVP-capped Mn-doped ZnO exhibit an interesting variation of the band gap with the concentration of Mn. Fluorescence emission, electron paramagnetic resonance, and X-ray absorption spectroscopy provide evidence for the presence of Mn in the interior as well as on the surface of the nanocrystals.
ISSN:1520-6106
1520-5207
DOI:10.1021/jp049960o