Synthesis and characterization of tungsten oxide nanorods from chemical vapor deposition-grown tungsten film by low-temperature thermal annealing
SCIE
SCOPUS
- Title
- Synthesis and characterization of tungsten oxide nanorods from chemical vapor deposition-grown tungsten film by low-temperature thermal annealing
- Authors
- Jeon, S; Yong, K
- Date Issued
- 2008-05
- Publisher
- MATERIALS RESEARCH SOC
- Abstract
- A simple thermal annealing was performed to prepare tungsten oxide nanorods directly from tungsten (W) film. The W film was deposited on Si(100) substrate by chemical vapor deposition (CVD) at 450 degrees C using W(CO)(6). A high density of tungsten oxide nanorods was produced by heating of the W film at 600-700 degrees C. The morphology, structure, composition, and chemical binding states of the prepared nanorods were characterized by scanning electron microscopy (SEM), x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM) analysis. XRD and TEM results showed that the grown nanorods were single-crystalline W18O49. According to XPS analysis, the W18O49 nanorods contained similar to 55.69% W6+, similar to 32.28% W5+, and similar to 12.03% W4+. The growth mechanism based on thermodynamics is discussed for the growth of tungsten oxide nanorods from W film.
- Keywords
- SENSITIZED SOLAR-CELLS; TIO2 NANOTUBE ARRAYS; HIGH-ASPECT-RATIO; WO3 THIN-FILMS; X-RAY; OPTICAL-PROPERTIES; W18O49 NANORODS; ZINC-OXIDE; NANOWIRES; NANOSTRUCTURES
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/22786
- DOI
- 10.1557/jmr.2008.0158
- ISSN
- 0884-2914
- Article Type
- Article
- Citation
- JOURNAL OF MATERIALS RESEARCH, vol. 23, no. 5, page. 1320 - 1326, 2008-05
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