Microstructures and thermochromic characteristics of VO 2 /AZO composite films

Han, Xiaoyan; Li, Yi; Yuan, Wei; Fang, Baoying; Wang, Xiaohua; Hao, Rujiang; Wu, Zhengyi; Xu, Tingting; Jiang, Wei; Peizu, Chen

doi:10.1016/j.infrared.2016.04.022

Cited by 11 publications

(2 citation statements)

References 18 publications

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“…In figure 2(a), the peaks located at 34.3 • and 64.92 • correspond to the GaAs ( 200) and (400) diffraction. The peaks located at 28 • and 55.64 • are assigned to VO 2 (011) and (220) diffraction, similar to the JCPDS reference [18] and previous reports. To further 011) and (220) peaks are observed along with the high degree of orientation on the (011) plane, suggesting that the VO 2 film grows to high lattice orientation without any other phases or impurities.…”

Section: Resultssupporting

confidence: 88%

Electrical and infrared responses of n-VO₂/p-GaAs heterojunctions based on VO₂ phase transition properties

Zhou

Tian

et al. 2020

J. Phys. D: Appl. Phys.

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In this investigation, high-quality VO2 films were prepared on p-GaAs wafers by DC magnetron sputtering and post-annealing process. The results indicate that the optimum annealing temperature and time of the sample are 2 h and 420 °C with the excellent rectification characteristics originated from the n-VO2/p-GaAs interface before the occurrence of semiconductor-to-metal phase transition in VO2, which can be explained by the thermal electron emission model. The device’s threshold voltage at 30 °C and 60 °C corresponds to 7.5 and 6 V. The responsivity of the as-fabricated photon detector under 980 and 1310 nm laser illumination was 0.013 and 0.022 A W−1 at an applied bias of 3 V as well as 0.0025 and 0.0048 A W−1 at zero bias, respectively. The NIR transmittance decreases with increasing voltage and temperature due to the combination of voltage and temperature to induce VO2 phase transition. The results will be beneficial to explore and improve the IR photon detector based on VO2 and provide ideas for new optoelectronic devices with phase transition characteristics.

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Section: Resultssupporting

confidence: 88%

Electrical and infrared responses of n-VO₂/p-GaAs heterojunctions based on VO₂ phase transition properties

Zhou

Tian

et al. 2020

J. Phys. D: Appl. Phys.

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“…The functional layer refers to pristine or doped VO 2 films that exhibit typical thermal phase transition properties. The reinforcement layer, which can also be called anti-reflective layer, is mainly designed to increase the transmittance of light [ 29 ] and improve anti-oxidation and anti-acid properties [ 30 ]. TiO 2 [ 31 ], SiO 2 [ 12 ], and ZrO 2 [ 32 ] are the primary anti-reflective layers used.…”

Section: Introductionmentioning

confidence: 99%

New intelligent multifunctional SiO₂/VO₂ composite films with enhanced infrared light regulation performance, solar modulation capability, and superhydrophobicity

Wang

Zhao

Liang

et al. 2017

Science and Technology of Advanced Materials

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Highly transparent, energy-saving, and superhydrophobic nanostructured SiO2/VO2 composite films have been fabricated using a sol–gel method. These composite films are composed of an underlying infrared (IR)-regulating VO2 layer and a top protective layer that consists of SiO2 nanoparticles. Experimental results showed that the composite structure could enhance the IR light regulation performance, solar modulation capability, and hydrophobicity of the pristine VO2 layer. The transmittance of the composite films in visible region (T lum) was higher than 60%, which was sufficient to meet the requirements of glass lighting. Compared with pristine VO2 films and tungsten-doped VO2 film, the near IR control capability of the composite films was enhanced by 13.9% and 22.1%, respectively, whereas their solar modulation capability was enhanced by 10.9% and 22.9%, respectively. The water contact angles of the SiO2/VO2 composite films were over 150°, indicating superhydrophobicity. The transparent superhydrophobic surface exhibited a high stability toward illumination as all the films retained their initial superhydrophobicity even after exposure to 365 nm light with an intensity of 160 mW.cm−2 for 10 h. In addition, the films possessed anti-oxidation and anti-acid properties. These characteristics are highly advantageous for intelligent windows or solar cell applications, given that they can provide surfaces with anti-fogging, rainproofing, and self-cleaning effects. Our technique offers a simple and low-cost solution to the development of stable and visible light transparent superhydrophobic surfaces for industrial applications.

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Modified color for VO2/Au/VO2 sandwich structure-based smart windows

Zhou

Song

et al. 2018

Appl. Phys. A

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Microstructures and thermochromic characteristics of VO 2 /AZO composite films

Cited by 11 publications

References 18 publications

Electrical and infrared responses of n-VO₂/p-GaAs heterojunctions based on VO₂ phase transition properties

Electrical and infrared responses of n-VO₂/p-GaAs heterojunctions based on VO₂ phase transition properties

New intelligent multifunctional SiO₂/VO₂ composite films with enhanced infrared light regulation performance, solar modulation capability, and superhydrophobicity

Modified color for VO2/Au/VO2 sandwich structure-based smart windows

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Microstructures and thermochromic characteristics of VO 2 /AZO composite films

Cited by 11 publications

References 18 publications

Electrical and infrared responses of n-VO2/p-GaAs heterojunctions based on VO2 phase transition properties

Electrical and infrared responses of n-VO2/p-GaAs heterojunctions based on VO2 phase transition properties

New intelligent multifunctional SiO2/VO2 composite films with enhanced infrared light regulation performance, solar modulation capability, and superhydrophobicity

Modified color for VO2/Au/VO2 sandwich structure-based smart windows

Contact Info

Product

Resources

About

Electrical and infrared responses of n-VO₂/p-GaAs heterojunctions based on VO₂ phase transition properties

Electrical and infrared responses of n-VO₂/p-GaAs heterojunctions based on VO₂ phase transition properties

New intelligent multifunctional SiO₂/VO₂ composite films with enhanced infrared light regulation performance, solar modulation capability, and superhydrophobicity