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Polymorph-Tuned Synthesis of alpha- and beta-Bi2O3 Nanowires and Determination of Their Growth Direction from Polarized Raman Single Nanowire Microscopy

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Title
Polymorph-Tuned Synthesis of alpha- and beta-Bi2O3 Nanowires and Determination of Their Growth Direction from Polarized Raman Single Nanowire Microscopy
Other Titles
Polymorph-tuned synthesis of α-And β-Bi2O3 nanowires and determination of their growth direction from polarized raman single nanowire microscopy
Author
In, JunehoYoon, IlsunSeo, KwanyongPark, JeungheeChoo, JaebumLee, YonghoonKim, Bongsoo
Keywords
OXIDE THIN-FILMS; SEMICONDUCTING NANOWIRES; BI2O3; DEPOSITION; SCATTERING; NANOPARTICLES
Issue Date
2011-02
Publisher
WILEY-V C H VERLAG GMBH
Citation
CHEMISTRY-A EUROPEAN JOURNAL, v.17, no.4, pp.1304 - 1309
Abstract
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
URI
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DOI
10.1002/chem.201001684
ISSN
0947-6539
Appears in Collections:
ECHE_Journal Papers
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