Crystalline bismuth oxide nanorods fabricated on Pt-coated substrates using a trimethylbismuth and oxygen mixture
Abstract
The current work reports the fabrication of crystalline Bi2O3 nanorods on Pt-coated Si substrates using trimethylbismuth and O2 as the bismuth and the oxygen sources, respectively, in the metalorganic chemical vapor deposition process. Their microstructures were characterized by scanning electron microscopy, X-ray diffraction, and transmission electron microscopy. The obtained nanorods were crystalline, with their diameters in the range of 20–200 nm. The absence of tip-nanoparticle and the presence of predeposited Bi2O3 layer indicated that the growth was dominated by a vapor-solid process. The photoluminescence measurements of the Bi2O3 nanorods at room temperature exhibited an emission band peaked at around 422 nm. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
