Synthesis and Characterization of Mn-Doped ZnO Nanocrystals
The Journal of Physical Chemistry B2004Vol. 108(20), pp. 6303–6310
Citations Over TimeTop 10% of 2004 papers
Ranjani Viswanatha, Sameer Sapra, Subhra Sen Gupta, Biswarup Satpati, P. V. Satyam, B. N. Dev, D. D. Sarma
Abstract
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.
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