The optical functions of uniaxial ZnO are determined from 200 to 850 nm (6.2–1.46 eV) using three different ellipsometric techniques: (1) standard spectroscopic two-modulator generalized ellipsometry (2-MGE), (2) transmission two-modulator generalized ellipsometry, and (3) near-normal incidence two modulator generalized ellipsometry microscopy (2-MGEM). The 2-MGE results in very accurate values of the dielectric functions and error estimates from 1.46 to 6.2 eV, while the transmission 2-MGE results in more accurate values of the birefringence and associated errors below the band edge where ZnO is transparent. The 2-MGEM also measures the diattenuation (which is related to the birefringence) and other parameters, but at near-normal incidence at a single wavelength (577 nm). The 2-MGEM is designed as a scanning instrument resulting in these parameters being measured over a surface.
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Optical functions of uniaxial zinc oxide (ZnO) revisited
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December 2023
Research Article|
August 25 2023
Optical functions of uniaxial zinc oxide (ZnO) revisited
Gerald E. Jellison, Jr.
Gerald E. Jellison, Jr.
a)
(Conceptualization, Formal analysis, Investigation, Methodology, Software, Validation, Visualization, Writing – original draft, Writing – review & editing)
Oak Ridge National Laboratory
, 1 Bethel Valley Rd., Oak Ridge, Tennessee 37831a)Author to whom correspondence should be addressed: jellisongejr@ornl.gov
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a)Author to whom correspondence should be addressed: jellisongejr@ornl.gov
Surf. Sci. Spectra 30, 026001 (2023)
Article history
Received:
May 30 2023
Accepted:
July 26 2023
Citation
Gerald E. Jellison; Optical functions of uniaxial zinc oxide (ZnO) revisited. Surf. Sci. Spectra 1 December 2023; 30 (2): 026001. https://doi.org/10.1116/6.0002859
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