Thermochromic VO2based sandwich structure Ag/Al2O3/VO2with low solar absorption and tunable emittance for spacecraft

Xiaoqian Wang; Haibo Jin; Boyu Wang; Chen Ling; Junlin Yang; Donglai Li; Jingbo Li

doi:10.1063/5.0084341

Thermochromic VO₂based sandwich structure Ag/Al₂O₃/VO₂with low solar absorption and tunable emittance for spacecraft

Xiaoqian Wang, Haibo Jin, Boyu Wang, Chen Ling^*, Junlin Yang, Donglai Li, Jingbo Li^*

^*Corresponding author for this work

School of Material Science and Engineering

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

14 Citations (Scopus)

Abstract

The smart radiator device (SRD) with low solar absorption (αs) and large infrared emittance modulation (Δϵ) is desirable to a spacecraft thermal control system. In this work, the SRD was fabricated through depositing the Ag/Al2O3/VO2 triple-layer film on the Si substrate by magnetron sputtering. The properties of the SRD devices were optimized by tuning the thickness of the VO2 layer, and a fantastic SRD device was acquired, which showed low αs, high Δϵ, and intense high-temperature infrared emittance (ϵHT). For the device with a VO2 layer of 50 nm thickness, αs was as low as 29.7% and Δϵ reached 0.53 with ϵHT up to 0.87. The triple-layer film device shows great potential for applications in the spacecraft thermal control system.

Original language	English
Article number	135301
Journal	Journal of Applied Physics
Volume	131
Issue number	13
DOIs	https://doi.org/10.1063/5.0084341
Publication status	Published - 7 Apr 2022

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abstract = "The smart radiator device (SRD) with low solar absorption (αs) and large infrared emittance modulation (Δϵ) is desirable to a spacecraft thermal control system. In this work, the SRD was fabricated through depositing the Ag/Al2O3/VO2 triple-layer film on the Si substrate by magnetron sputtering. The properties of the SRD devices were optimized by tuning the thickness of the VO2 layer, and a fantastic SRD device was acquired, which showed low αs, high Δϵ, and intense high-temperature infrared emittance (ϵHT). For the device with a VO2 layer of 50 nm thickness, αs was as low as 29.7% and Δϵ reached 0.53 with ϵHT up to 0.87. The triple-layer film device shows great potential for applications in the spacecraft thermal control system.",

author = "Xiaoqian Wang and Haibo Jin and Boyu Wang and Chen Ling and Junlin Yang and Donglai Li and Jingbo Li",

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AU - Wang, Xiaoqian

AU - Jin, Haibo

AU - Wang, Boyu

AU - Ling, Chen

AU - Yang, Junlin

AU - Li, Donglai

AU - Li, Jingbo

PY - 2022/4/7

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AB - The smart radiator device (SRD) with low solar absorption (αs) and large infrared emittance modulation (Δϵ) is desirable to a spacecraft thermal control system. In this work, the SRD was fabricated through depositing the Ag/Al2O3/VO2 triple-layer film on the Si substrate by magnetron sputtering. The properties of the SRD devices were optimized by tuning the thickness of the VO2 layer, and a fantastic SRD device was acquired, which showed low αs, high Δϵ, and intense high-temperature infrared emittance (ϵHT). For the device with a VO2 layer of 50 nm thickness, αs was as low as 29.7% and Δϵ reached 0.53 with ϵHT up to 0.87. The triple-layer film device shows great potential for applications in the spacecraft thermal control system.

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Thermochromic VO₂based sandwich structure Ag/Al₂O₃/VO₂with low solar absorption and tunable emittance for spacecraft

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