Document Type
Article
Publication Date
2019
Abstract
Band-to-band transition energy parameters for single-crystal actinide samples of uranium oxide and thorium oxide were determined and compared using spectroscopic ellipsometry and critical-point dielectric function analyses. Spectroscopic ellipsometry measurements from the near-infrared to the vacuum ultraviolet spectral region were used to determine the dielectric functions of uranium oxide and thorium oxide. The critical-point structure is similar between UO2 and ThO2 but strongly blue shifted for ThO2. We find bandgap energies of 2.1 eV and 5.4 eV for UO2 and ThO2, respectively.
DOI
10.1063/1.5087059
Source Publication
Applied Physics Letters
Recommended Citation
A. Mock, C.L. Dugan, S. Knight, R. Korlacki, J.M. Mann, M.M. Kimani, J.C. Petrosky, P.A. Dowben, and M. Schubert, Appl. Phys. Lett. 114, 211901 (2019). https://doi.org/10.1063/1.5087059
Comments
This record sources the open access CHORUS-furnished accepted manuscript (post-print) version of the article. An embargo was observed for this posting in accordance with the publisher and the research funding body.
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