Nanotech 2010

Semiconductor Oxide Nanoparticles

A. Sharma, A. Sharma, R. Sharma
AKG College of Engineering, IN

Keywords: semiconductor, oxides, nanoparticles, size control

Abstract:

The nanoparticle hybrid systems are improved semiconductors. They are compared with their isolated counterparts. We report the preparation of MO2 (M = Ti, Ce, and Sn) and their synthesis. We report the controlled-size semiconductor oxide nanoparticles based on the impregnation and decomposition of transition-metal 2-ethylhexanoate-based precursors in mesoporous hosts. The pore size of the host material plays significant role to control the size of the material synthesized within it. The mass gain after each cycle in the synthesis process determined the control of nanoparticle growth via a layer-by-layer assembly. X-ray diffraction, transmission electron microscopy, and Raman spectroscopy techniques were used to characterize SnO2, TiO2 and CeO2 nanocrystals. Raman spectroscopy measured nanocrystal size as characterization tool.
 
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