Terahertz transmission properties of vanadium dioxide films deposited on gold grating structure with different periods

Min Gao; Xu Wang; Shengxian Luo; Qingjian Lu; Sheng-Nian Luo; Chang Lu; Sihong Chen; Fei Long; Yuan Lin

doi:10.1088/2053-1591/ab8e71

Materials Research Express (Jan 2020)

Terahertz transmission properties of vanadium dioxide films deposited on gold grating structure with different periods

Min Gao,
Xu Wang,
Shengxian Luo,
Qingjian Lu,
Sheng-Nian Luo,
Chang Lu,
Sihong Chen,
Fei Long,
Yuan Lin

Affiliations

Min Gao: ORCiD; State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, People’s Republic of China
Xu Wang: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, People’s Republic of China
Shengxian Luo: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, People’s Republic of China
Qingjian Lu: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, People’s Republic of China
Sheng-Nian Luo: ORCiD; The Peac Institute of Multiscale Sciences, Chengdu 610207, People’s Republic of China
Chang Lu: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, People’s Republic of China
Sihong Chen: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, People’s Republic of China
Fei Long: Guangxi Key Laboratory of Optical and Electronic Materials and Devices, China & School of Materials Science and Engineering, Guilin University of Technology , Guilin 541004, People’s Republic of China
Yuan Lin: State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China , Chengdu 610054, People’s Republic of China

DOI: https://doi.org/10.1088/2053-1591/ab8e71
Journal volume & issue: Vol. 7, no. 5
p. 056404

Abstract

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Vanadium dioxide (VO _2 ) is a typical thermal induced phase transition material, exhibiting a transition from metallic phase at high temperature to insulating phase at low temperature, which is also accompanied by a conductivity change of over several orders of magnitude. The transition property makes VO _2 prominent to achieve an effective degree of control of terahertz (THz) wave. In this paper, composite films consisting of metal grating with different periods and VO _2 film were prepared by polymer assisted deposition method. Although the conductivity change of VO _2 films deposited on gold grating structure across phase transition was declined to about two orders of magnitude, the amplitude modulation depth of THz of the composite films can still reach a high value. Furthermore, it was found that the THz modulation depth was related with the grating period. According to theoretical simulation, the fluctuation height of VO _2 films, caused by metal grating structure during growth, can be used to regulate THz wave. These results demonstrate an economic and unsophisticated method to fabricate VO _2 films with thickness fluctuation structure and then tune the THz waves.

Published in Materials Research Express

ISSN: 2053-1591 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials; Technology: Chemical technology
Website: https://iopscience.iop.org/journal/2053-1591

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