The unoccupied electronic structure characterization of hydrothermally grown ThO2 single crystals. Issue 3 (7th January 2014)

• Record Type: Journal Article
• Authors: Kelly, T. D.; Petrosky, J. C.; Turner, D.; McClory, J. W.; Mann, J. M.; Kolis, J. W.; Zhang, Xin; Dowben, P. A.
• Is Part Of: Physica status solidi. Volume 8:Issue 3(2014:Mar.)
• Page Start: 283
• Page End: 286
• Publication Date: 2014-01-07
• Subjects: Solid state physics -- Periodicals; 530.4105
• DOI: 10.1002/pssr.201308286
• Languages: English
• ISSNs: 1862-6254

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Single crystals of thorium dioxide ThO₂, grown by the hydrothermal growth technique, have been investigated by ultraviolet photoemission spectroscopy (UPS), inverse photoemission spectroscopy (IPES), and L₃, M₃, M₄, and M₅ X‐ray absorption near edge spectroscopy (XANES). The experimental band gap for large single crystals has been determined to be 6 eV to 7 eV, from UPS and IPES, in line with expectations. The combined UPS and IPES, place the Fermi level near the conduction band minimum, making these crystals n‐type, with extensive band tailing, suggesting an optical gap in the region of 4.8 eV for excitations from occupied to unoccupied edge states. Hybridization between the Th 6d/5f bands with O 2p is strongly implicated. (© 2014 WILEY‐VCH Verlag GmbH &amp; Co. KGaA, Weinheim)</p> </abstract>