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Open AccessArticle

Thermochromic and Femtosecond-Laser-Induced Damage Performance of Tungsten-Doped Vanadium Dioxide Films Prepared Using an Alloy Target

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Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
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University of Chinese Academy of Sciences, Beijing 100049, China
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Shanghai Institute of Laser Plasma, China Academy of Engineering Physics, Shanghai 201800, China
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Shenzhen Key Laboratory of Advanced Thin Film and Applications, College of Physics and Energy, Shenzhen University, Shenzhen 518060, China
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College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(9), 1724; https://doi.org/10.3390/ma11091724
Received: 22 August 2018 / Revised: 11 September 2018 / Accepted: 12 September 2018 / Published: 14 September 2018
(This article belongs to the Section Thin Films)
Thermochromic tungsten-doped VO2 thin films were successfully fabricated using a W-V alloy target. X-ray diffraction analyses showed that the W-doped VO2 film had a preferred orientation of (011), and that the doping did not degrade the film crystallinity compared with that of the pure film. X-ray photoelectron spectroscopy and energy-dispersive spectroscopy showed that the doped 0.81 atom% tungsten replaced vanadium in the lattice of the film. The metal–insulator transition temperature of the W-doped VO2 film was reduced to 35.5 °C, which is close to room temperature. Additionally, the infrared transmittance modulation of the W-doped film at λ = 2500 nm reached 56%, indicating an excellent switching efficiency. The damage behavior of the W-doped VO2 film under a femtosecond-laser irradiation was experimentally investigated. Our results revealed that defect-related damages induced by the femtosecond laser are relevant for W-doped VO2 films. This study provides valuable insights into VO2 films for potential applications in laser protection. View Full-Text
Keywords: vanadium dioxide; metal doping; laser-induced damage; thermochromic performance vanadium dioxide; metal doping; laser-induced damage; thermochromic performance
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MDPI and ACS Style

Zhu, M.-D.; Shan, C.; Li, C.; Wang, H.; Qi, H.-J.; Zhang, D.-P.; Lv, W.Z. Thermochromic and Femtosecond-Laser-Induced Damage Performance of Tungsten-Doped Vanadium Dioxide Films Prepared Using an Alloy Target. Materials 2018, 11, 1724.

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