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Zinc gallate (ZnGa2...
Zinc gallate (ZnGa2O4) epitaxial thin films : determination of optical properties and bandgap estimation using spectroscopic ellipsometry
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- Bairagi, Samiran (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Hsiao, Ching-Lien (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Magnusson, Roger (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Birch, Jens (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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- Chu, Jinn P. (författare)
- Natl Taiwan Univ Sci & Technol, Taiwan
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- Tarntair, Fu-Gow (författare)
- Natl Yang Ming Chiao Tung Univ, Taiwan
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- Horng, Ray-Hua (författare)
- Natl Taiwan Univ Sci & Technol, Taiwan; Natl Yang Ming Chiao Tung Univ, Taiwan
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- Järrendahl, Kenneth (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
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(creator_code:org_t)
- Optica Publishing Group, 2022
- 2022
- Engelska.
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Ingår i: Optical Materials Express. - : Optica Publishing Group. - 2159-3930. ; 12:8, s. 3284-3295
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Electronic grade ZnGa2O4 epitaxial thin films were grown on c-plane sapphire substrates by metal-organic chemical vapor deposition and investigated using spectroscopic ellipsometry. Their thickness, roughness and optical properties were determined using a Multiple Sample Analysis based approach by the regression analysis of optical model and measured data. These samples were then compared to samples which had undergone ion etching, and it was observed that etching time up to four minutes had no discernible impact on its optical properties. Line shape analysis of resulting absorption coefficient dispersion revealed that ZnGa(2)O(4 )exhibited both direct and indirect interband transitions. The modified Cody formalism was employed to determine their optical bandgaps. These values were found to be in good agreement with values obtained using other popular bandgap extrapolation procedures. Published by Optica Publishing Group under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published articles title, journal citation, and DOI.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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