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Dielectric function...
Dielectric function tensor (1.5 eV to 9.0 eV), anisotropy, and band to band transitions of monoclinic -(AlxGa1-x)(2)O-3 (x 0.21) films
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- Hilfiker, Matthew (author)
- Univ Nebraska Lincoln, NE 68588 USA
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- Kilic, Ufuk (author)
- Univ Nebraska Lincoln, NE 68588 USA
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- Mock, Alyssa (author)
- Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
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- Darakchieva, Vanya (author)
- Linköpings universitet,Halvledarmaterial,Tekniska fakulteten
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- Knight, Sean (author)
- Univ Nebraska Lincoln, NE 68588 USA
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- Korlacki, Rafal (author)
- Univ Nebraska Lincoln, NE 68588 USA
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- Mauze, Akhil (author)
- Univ Calif Santa Barbara, CA 93106 USA
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- Zhang, Yuewei (author)
- Univ Calif Santa Barbara, CA 93106 USA
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- Speck, James (author)
- Univ Calif Santa Barbara, CA 93106 USA
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- Schubert, Mathias (author)
- Linköpings universitet,Halvledarmaterial,Tekniska fakulteten,Univ Nebraska Lincoln, NE 68588 USA; Leibniz Inst Polymerforsch eV, Germany
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(creator_code:org_t)
- AMER INST PHYSICS, 2019
- 2019
- English.
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In: Applied Physics Letters. - : AMER INST PHYSICS. - 0003-6951 .- 1077-3118. ; 114:23
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- A set of monoclinic -(AlxGa1-x)(2)O-3 films coherently grown by plasma-assisted molecular beam epitaxy onto (010)-oriented -Ga2O3 substrates for compositions x0.21 is investigated by generalized spectroscopic ellipsometry at room temperature in the spectral range of 1.5eV-9.0eV. We present the composition dependence of the excitonic and band to band transition energy parameters using a previously described eigendielectric summation approach for -Ga2O3 from the study by Mock et al. All energies shift to a shorter wavelength with the increasing Al content in accordance with the much larger fundamental band to band transition energies of Al2O3 regardless of crystal symmetry. The observed increase in the lowest band to band transition energy is in excellent agreement with recent theoretical predictions. The most important observation is that charge confinement in heterostructures will strongly depend on the growth condition due to the strongly anisotropic properties of the band to band transitions.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Hilfiker, Matthe ...
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Kilic, Ufuk
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Mock, Alyssa
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Darakchieva, Van ...
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Knight, Sean
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Korlacki, Rafal
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show more...
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Mauze, Akhil
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Zhang, Yuewei
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Speck, James
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Schubert, Mathia ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Applied Physics ...
- By the university
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Linköping University