Optical, Magnetic, and Electronic Properties of Nanostructured VO2 Thin Films Grown by Spray Pyrolysis: DFT First Principle Study

Haimeur, A. El; Mrigal, A.; Bakkali, Hicham; Gana, L. El; Nouneh, Khalid; Addou, M.; Domí­nguez, Manuel

doi:10.1007/s10948-019-05216-3

Cited by 7 publications

(4 citation statements)

References 39 publications

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“…In Figure 7, there are four peaks of ε 2 (ω) for the pure M1-phase VO 2 at 1.572, 2.065, 3.535, and 7.157 eV, matching the experimental values where the dielectric peaks are around 0.25-5.0 eV. [32] The ε 2 (ω) of pure and Co-doped VO 2 are mainly in the low-energy region (<3.0 eV), indicating that the change of optical properties for Co-doped VO 2 mainly occurs in the visible (1.63-3.17 eV) and near-infrared (0.00124-1.63 eV) light regions. It should be noted that the ε 2 (ω) is related to the electron transfer, reflecting the strength of the electron excited transition as well as the light absorption capacity.…”

Section: Dielectric Functionsupporting

confidence: 76%

First‐Principles Studies of Electronic Structures and Optical Properties of Cobalt‐Doped VO₂

Wan

2023

Physica Status Solidi (b)

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First‐principles calculations based on density functional theory (DFT) are used to investigate the phase transition characteristics, electronic structures, and optical properties of pure and Co‐doped VO2 (M1 and R phase). Studies show that the metal‐to‐insulator phase transition temperature of VO2 is significantly reduced after Co doping, which is correlated to the decrease of bandgap value. Besides, the decrease of the energy required for electron transition of M1‐phase Co‐doped VO2 corresponds to the imaginary part of the dielectric peak moving to the low‐energy region. For both the M1‐ and R‐phase VO2, the visible light transmissivity of the Co‐doped VO2 is increased than that of pure VO2, which is beneficial to the application of VO2 film as visible windows. In addition, the absorptivity and reflectivity of Co‐doped R‐phase VO2 in the infrared light range are larger than those of M1‐phase VO2, indicating that the Co‐doped VO2 can block more infrared light at higher temperature to fulfill the purpose of lowering temperature. Overall, these results give new insights for the application of Co‐doped VO2 as a photoenergy material to regulate the room temperature.

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Section: Dielectric Functionsupporting

confidence: 76%

First‐Principles Studies of Electronic Structures and Optical Properties of Cobalt‐Doped VO₂

Wan

2023

Physica Status Solidi (b)

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“…The low-cost, nonvacuum, and high-yield solution-based spray pyrolysis (SP) technique emerges as a noteworthy method for simple, scalable, and cost-effective fabrication of high-quality VO 2 thin films. While previous reports , have utilized SP to obtain polycrystalline VO 2 on glass substrates, to our knowledge, there have been no reports on the epitaxial growth of VO 2 using this method. In this study, we present the successful synthesis of high-quality VO 2 thin films on a c -plane Al 2 O 3 substrate using SP.…”

Section: Introductionmentioning

confidence: 99%

Tailoring Epitaxial VO₂ Thin Films with Tunable Properties via Spray Pyrolysis

Ainabayev,

Walls,

Casey

et al. 2023

J. Phys. Chem. C

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“…In terms of the preparation of VO2, different preparation processes can be used to obtain VO2 with different metal-insulator transition (MIT) temperatures. Among them, VO2 with a MIT temperature of 60℃ can be obtained by spray pyrolysis technology [28,29], and VO2 with a MIT temperature of 72℃ can be obtained by atomic layer deposition technology [30]. In this paper, a broadband reconfigurable frequencyselective surface in terahertz band based on different MIT temperature of VO2 is proposed.…”

Section: Introductionmentioning

confidence: 99%

A broadband reconfigurable frequency-selective surface in terahertz band based on different metal-insulator transition temperature of VO<sub>2</sub>

Cheng,

Lin,

Chen

et al. 2023

IEICE Electron. Express

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In this paper, a broadband reconfigurable frequency-selective surface (FSS) in terahertz band based on different metal-insulator transition (MIT) temperature of vanadium dioxide (VO2) is proposed. By using different MIT temperature of VO2, the broadband reconfigurable design of the FSS is realized. The results show that the center frequency of the FSS is 2.15 THz and when the temperature is lower than 60 ℃ , the relative bandwidth is 74.19%. When the temperature is between 60℃ and 72℃, the relative bandwidth is 55.59%. Above 72℃, the relative bandwidth is 33.78%. The FSS has broad application prospects in other emerging terahertz fields such as terahertz regulation and communication.

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Optical, Magnetic, and Electronic Properties of Nanostructured VO2 Thin Films Grown by Spray Pyrolysis: DFT First Principle Study

Cited by 7 publications

References 39 publications

First‐Principles Studies of Electronic Structures and Optical Properties of Cobalt‐Doped VO₂

First‐Principles Studies of Electronic Structures and Optical Properties of Cobalt‐Doped VO₂

Tailoring Epitaxial VO₂ Thin Films with Tunable Properties via Spray Pyrolysis

A broadband reconfigurable frequency-selective surface in terahertz band based on different metal-insulator transition temperature of VO<sub>2</sub>

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Optical, Magnetic, and Electronic Properties of Nanostructured VO2 Thin Films Grown by Spray Pyrolysis: DFT First Principle Study

Cited by 7 publications

References 39 publications

First‐Principles Studies of Electronic Structures and Optical Properties of Cobalt‐Doped VO2

First‐Principles Studies of Electronic Structures and Optical Properties of Cobalt‐Doped VO2

Tailoring Epitaxial VO2 Thin Films with Tunable Properties via Spray Pyrolysis

A broadband reconfigurable frequency-selective surface in terahertz band based on different metal-insulator transition temperature of VO<sub>2</sub>

Contact Info

Product

Resources

About

First‐Principles Studies of Electronic Structures and Optical Properties of Cobalt‐Doped VO₂

First‐Principles Studies of Electronic Structures and Optical Properties of Cobalt‐Doped VO₂

Tailoring Epitaxial VO₂ Thin Films with Tunable Properties via Spray Pyrolysis