Polymorph-Tuned Synthesis of alpha- and beta-Bi2O3 Nanowires and Determination of Their Growth Direction from Polarized Raman Single Nanowire Microscopy
- Authors
- In, Juneho; Yoon, Ilsun; Seo, Kwanyong; Park, Jeunghee; Choo, Jaebum; Lee, Yonghoon; Kim, Bongsoo
- Issue Date
- 2011
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- bismuth oxide; nanowires; photoluminescence; polarized Raman microscopy; polymorphism
- Citation
- CHEMISTRY-A EUROPEAN JOURNAL, v.17, no.4, pp.1304 - 1309
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMISTRY-A EUROPEAN JOURNAL
- Volume
- 17
- Number
- 4
- Start Page
- 1304
- End Page
- 1309
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/114874
- DOI
- 10.1002/chem.201001684
- ISSN
- 0947-6539
- 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.
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Collections - Graduate School > Department of Advanced Materials Chemistry > 1. Journal Articles
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