High-power impulse magnetron sputtering deposition of high crystallinity vanadium dioxide for thermochromic smart windows applications

Vu, Tuan Duc; Liu, Shiyu; Zeng, Xin; Li, Chuanchang; Long, Yi

doi:10.1016/j.ceramint.2019.12.042

Cited by 26 publications

(9 citation statements)

References 54 publications

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“…Consequently, the elaboration of VO2 in thin films is not compatible with temperature-sensitive substrates. High power impulse magnetron sputtering (HiPIMS) is a novel sputtering method, applied recently to the deposition of VO2 films [13,14,15]. It is characterized by a high target current and thus a production of highly energetic sputtered ions [16].…”

Section: Introductionmentioning

confidence: 99%

High quality thermochromic VO2 thin films deposited at room temperature by balanced and unbalanced HiPIMS

Victor

Marcel

Sauques

et al. 2021

Solar Energy Materials and Solar Cells

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Section: Introductionmentioning

confidence: 99%

High quality thermochromic VO2 thin films deposited at room temperature by balanced and unbalanced HiPIMS

Victor

Marcel

Sauques

et al. 2021

Solar Energy Materials and Solar Cells

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“…At the temperature of 30 °C, Raman peaks of 194, 224, 310, 389, 498, 615 cm −1 could all be attributed to VO 2 (M), which is consistent with other literature. [34] However, there are no peaks in Raman spectra of the VO 2 film at 90 °C, except for the substrate peak. It manifests a gradual transformation of VO 2 (M) to VO 2 (R) with the gradual disappearance of all characteristic peaks when temperature was increased from 30 to 90 °C during heating process.…”

Section: Resultsmentioning

confidence: 97%

High‐Efficiency and Durable Inverted Perovskite Solar Cells with Thermally‐Induced Phase‐Change Electron Extraction Layer

Meng

Liu

et al. 2021

Advanced Energy Materials

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Reducing carrier recombination and facilitating charge extraction at the interface is of great significance to improve the device performance of perovskite solar cells (PSCs) towards commercial use. However, there has been little work done concerning transportation and recombination mechanism at the interface of the metal electrode and the electron transport layer in inverted PSCs. Herein, a new strategy of interface modification is reported that leverages the unique metal‐to‐insulator transition (MIT) characteristics of vanadium dioxide which is inserted as the electron extraction layer (EEL) in p‐i‐n planar PSCs. Benefiting from the suitable intermediate energy level of VO2, the optimized device shows a power conversion efficiency (PCE) up to 22.11% with negligible hysteresis, as compared to the 20.96% benchmark at room temperature. Interestingly, the PCE of VO2‐based PSC increases to over 23% at 85 °C, which can be attributed to the dramatic change in the electrical properties and better electron extraction caused by the MIT of VO2 beyond its critical phase‐change temperature. In addition, the encapsulated VO2‐PSC shows superior thermal stability for 1000 h at 85 °C under 1 Sun illumination, maintaining over 90% of initial PCE. This work initiates the state‐of‐art concept of inserting thermally‐induced phase‐transition material as an EEL to achieve efficient and durable perovskite photovoltaics.

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“…The luminous (visible) and solar transmission characteristics of the as-prepared VO 2 films deposited on sapphire substrates are also analyzed. The luminous transmittance (

), solar transmittance (

), the luminous modulation

and solar modulation (

) efficiencies are commonly considered properties for smart window applications [ 44 , 45 , 46 , 47 , 48 , 49 , 50 ].

measures the amount of visible light passing through a semi-transparent material.…”

Section: Resultsmentioning

confidence: 99%

Effect of Substrate Temperature on the Structural, Optical and Electrical Properties of DC Magnetron Sputtered VO2 Thin Films

et al. 2022

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This study focuses on the effect of the substrate temperature (TS) on the quality of VO2 thin films prepared by DC magnetron sputtering. TS was varied from 350 to 600 °C and the effects on the surface morphology, microstructure, optical and electrical properties of the films were investigated. The results show that TS below 500 °C favors the growth of V2O5 phase, whereas higher TS (≥500 °C) facilitates the formation of the VO2 phase. Optical characterization of the as-prepared VO2 films displayed a reduced optical transmittance (T˜) across the near-infrared region (NIR), reduced phase transition temperature (Tt), and broadened hysteresis width (ΔH) through the phase transition region. In addition, a decline of the luminous modulation (ΔT˜lum) and solar modulation (ΔT˜sol) efficiencies of the as-prepared films have been determined. Furthermore, compared with the high-quality films reported previously, the electrical conductivity (σ) as a function of temperature (T) reveals reduced conductivity contrast (Δσ) between the insulating and metallic phases of the VO2 films, which was of the order of 2. These outcomes indicated the presence of defects and unrelaxed lattice strain in the films. Further, the comparison of present results with those in the literature from similar works show that the preparation of high-quality films at TS lower than 650 °C presents significant challenges.

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High-power impulse magnetron sputtering deposition of high crystallinity vanadium dioxide for thermochromic smart windows applications

Cited by 26 publications

References 54 publications

High quality thermochromic VO2 thin films deposited at room temperature by balanced and unbalanced HiPIMS

High quality thermochromic VO2 thin films deposited at room temperature by balanced and unbalanced HiPIMS

High‐Efficiency and Durable Inverted Perovskite Solar Cells with Thermally‐Induced Phase‐Change Electron Extraction Layer

Effect of Substrate Temperature on the Structural, Optical and Electrical Properties of DC Magnetron Sputtered VO2 Thin Films

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