Details

Autor(en) / Beteiligte

• Viswanatha, Ranjani
• Sapra, Sameer
• Sen Gupta, Subhra
• Satpati, B
• Satyam, P. V
• Dev, B. N
• Sarma, D. D

Titel

Synthesis and Characterization of Mn-Doped ZnO Nanocrystals

Ist Teil von

• The journal of physical chemistry. B, 2004-05, Vol.108 (20), p.6303-6310

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2004

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.