Composition and optical property controlled in In 2 O 3 /W 2 N nanostructure composites by nitrogen plasma assisted in-situ thermal annealing

Saroni, A. and Alizadeh, M. and Rahman, S.A. and Dee, C.F. and Goh, B.T. (2017) Composition and optical property controlled in In 2 O 3 /W 2 N nanostructure composites by nitrogen plasma assisted in-situ thermal annealing. Materials Science in Semiconductor Processing, 68. pp. 6-14. ISSN 1369-8001

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Official URL: http://dx.doi.org/10.1016/j.mssp.2017.05.030

Abstract

In2O3/W2N nanostructure composites were grown by nitrogen plasma assisted in-situ thermal annealing at different hot-filament temperatures, Tf. The in-situ thermal annealing changes the as-grown In2O3 nanostructure to In2O3/W2N nanostructure composite with decreasing the grain size from 200 to 300 nm to ~ 100 nm. The optical spectroscopy results indicate that the optical energy gap of the nanostructure composites (3.7–2.7 eV) can be effectively tailored by monotonically increasing the W2N incorporation. The formation of W2N is attributed to the high energetic ion bombardment of N adatoms and incorporation of W adatoms. Furthermore, the effects of the filament temperature, Tf on the compositions in relation with the optical properties of the nanostructure composite are discussed.

Item Type: Article
Uncontrolled Keywords: Nanostructure composite; W2N; Evaporation; Nitrogen ion bombardment; Optical energy gap
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Dept of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 04 Aug 2017 06:16
Last Modified: 04 Aug 2017 06:16
URI: http://eprints.um.edu.my/id/eprint/17631

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