Synthesis and Characterization of Mn-Doped ZnO Nanocrystals
- 23 April 2004
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry B
- Vol. 108 (20) , 6303-6310
- https://doi.org/10.1021/jp049960o
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.Keywords
This publication has 31 references indexed in Scilit:
- Evolution of the electronic structure with size in II-VI semiconductor nanocrystalsPhysical Review B, 2004
- Ferromagnetism above room temperature in bulk and transparent thin films of Mn-doped ZnONature Materials, 2003
- An accurate description of quantum size effects in InP nanocrystallites over a wide range of sizesJournal of Physics D: Applied Physics, 2003
- SpintronicsAmerican Scientist, 2001
- Calculation of x-ray-absorption spectra of strongly correlated systemsPhysical Review B, 2000
- Microemulsion mediated synthesis of zinc-oxide nanoparticles for varistor studiesMaterials Research Bulletin, 1993
- Electronic structure of 3d-transition-metal compounds by analysis of the 2pcore-level photoemission spectraPhysical Review B, 1992
- The 2p absorption spectra of 3d transition metal compounds in tetrahedral and octahedral symmetryJournal of Physics: Condensed Matter, 1992
- Diluted magnetic semiconductorsJournal of Applied Physics, 1988
- Electron Paramagnetic Resonance of Manganese (II) in Hexagonal Zinc Oxide and Cadmium Sulfide Single CrystalsPhysical Review B, 1958