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

Songhee Choi; Joongoo Kang; Sangkyun Ryu; Hyoungjeen Jeen; Jaeseok Son; Shinbuhm Lee

doi:10.1063/1.5136059

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

Songhee Choi, Joongoo Kang, Sangkyun Ryu, Hyoungjeen Jeen, Jaeseok Son, Shinbuhm Lee

Department of Physics and Chemistry

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

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.

Original language	English
Article number	041111
Journal	APL Materials
Volume	8
Issue number	4
DOIs	https://doi.org/10.1063/1.5136059
State	Published - 1 Apr 2020

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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.",

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AU - Jeen, Hyoungjeen

AU - Son, Jaeseok

AU - Lee, Shinbuhm

PY - 2020/4/1

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N2 - 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.

AB - 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.

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

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