Polymorph-Tuned Synthesis of alpha- and beta-Bi(2)O(3) Nanowires and Determination of Their Growth Direction from Polarized Raman Single Nanowire Microscopy

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We report polymorph-tuned synthesis of alpha- and beta-Bi2O3 nanowires and their single nanowire micro-Raman study. The single crystalline Bi2O3 nanowires in different phases (alpha and beta) were selectively synthesized by adjusting the heating temperature of Bi precursor in a vapor transport process. No catalyst was employed. Furthermore, at an identical precursor evaporation temperature, alpha- and beta- phase Bi2O3 nanowires were simultaneously synthesized along the temperature gradient at a substrate. The growth direction of alpha-Bi2O3 nanowires was revealed by polarized Raman single nanowire spectra. For thin beta-Bi2O3 nanowires with a very small diameter, the polarized Raman single nanowire spectrum was strongly influenced by the shape effect.
Publisher
WILEY-BLACKWELL
Issue Date
2011
Language
English
Article Type
Article
Keywords

OXIDE THIN-FILMS; SEMICONDUCTING NANOWIRES; BI2O3; DEPOSITION; SCATTERING; NANOPARTICLES; ELECTROLYTES; ALPHA-BI2O3; SPECTRA

Citation

CHEMISTRY-A EUROPEAN JOURNAL, v.17, no.4, pp.1304 - 1309

ISSN
0947-6539
DOI
10.1002/chem.201001684
URI
http://hdl.handle.net/10203/98193
Appears in Collection
CH-Journal Papers(저널논문)
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