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High infrared transparency up to 8-mu m-wavelength in correlated vanadium Wadsley conductors

Title
High infrared transparency up to 8-mu m-wavelength in correlated vanadium Wadsley conductors
Authors
Choi, SongheeKang, JoongooRyu, SangkyunJeen, HyoungjeenSon, JaeseokLee, Shinbuhm
DGIST Authors
Kang, JoongooLee, Shinbuhm
Issue Date
2020-04
Citation
APL Materials, 8(4), 041111
Type
Article
Article Type
Article
Keywords
METAL-INSULATOR-TRANSITIONOXIDESVO2XPS
ISSN
2166-532X
Abstract
Within industrial and military contexts, research on infrared transparent conductors (IR-TCs) has been limited due to the significant suppression of transparency by the free electron response. In this paper, we report that strong correlations between electrons play an important role in the development of a new strategy for fabricating IR-TCs. Metallic VO2(B) and V6O13 persistently exhibit transmittances 45% higher than that of Sn-doped In2O3 for a broad IR wavelength range of up to 8 μm. Based on electronic band structures determined quantitatively using x-ray absorption spectroscopy, x-ray photoemission spectroscopy, and spectroscopic ellipsometry, we propose that the enhancement in the IR-TC is attributed to the redshift of the plasma frequency induced by the correlated electrons. © 2020 Author(s).
URI
http://hdl.handle.net/20.500.11750/11817
DOI
10.1063/1.5136059
Publisher
American Institute of Physics
Related Researcher
  • Author Lee, Shinbuhm shinbuhmlee Lab
  • Research Interests Multifunctional films; Experimental condensed matter physics
Files:
Collection:
Department of Emerging Materials ScienceComputational Materials Theory Group1. Journal Articles
Department of Emerging Materials Scienceshinbuhmlee Lab1. Journal Articles


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