Journal
CHEMICAL PHYSICS LETTERS
Volume 652, Issue -, Pages 203-208Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2016.04.020
Keywords
In2O3; InN/WO3; Reactive plasma annealing; XPS; Optical energy gap
Funding
- Ministry of Higher Education for Fundamental Research Grant Scheme (FRGS) [FP002-2013B]
- University of Malaya Postgraduate Research Fund (PPP) [PG073-2015A]
- Ministry of Higher Education (MOHE)
- MARA University of Technology (UiTM)
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A composition control and formation of InN/WO3 nanocomposite on the as-grown In2O3 by in-situ reactive plasma annealing was investigated. The reactive plasma annealing changes the facets crystalline In2O3 structure to nanograin structure of InN/WO3 nanocomposite with the grain size of 100-200 nm. X-ray photoelectron spectroscopy (XPS) reveals the formation of In2O3, InN and WO3 nanostructures in the nanocomposite. In-situ reactive plasma annealing enhances the removing of In2O3 and facilitates the formation of InN/WO3 nanocomposite. Furthermore, the reduction of oxygen in In2O3 leads to a decreasing in optical energy gap from 2.91 to 2.63 eV. (C) 2016 Elsevier B.V. All rights reserved.
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