Tunable hysteresis in metal-insulator transition of nanostructured vanadium oxide thin films deposited by reactive direct current magnetron sputtering

Zhang, Huafu; Wu, Zhiming; Yan, Dawei; Xu, Xiangdong; Jiang, Yadong

doi:10.1016/j.tsf.2013.12.007

Cited by 27 publications

(22 citation statements)

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“…Typically, thin films of vanadium dioxide with the optimal transition properties have a maximum visible transmission in the region of 50%; therefore, several methods of addressing this problem have been attempted. So far, the main techniques used for this purpose were regulation of film thickness , mixtures or composites [189,190] the deposition of antireflection layers [189] and doping [153,159,191].…”

Section: Improving the Aesthetics Of Thermochromic Filmsmentioning

confidence: 99%

“…As a result of this colouration, the luminous transmittance values of the VO 2 films are often lower than desired (around 30%-40%) which is a significant obstacle to employ these films for windows coatings applications. a higher efficiency [159]. 3.…”

mentioning

confidence: 99%

“…In order to mitigate the solar heat gain efficiently, the thermochromic transition should take place quickly; it means that the gradient of the thermochromic transition hysteresis should be steep and that the hysteresis loop width should be as narrow as possible [157]. A smaller hysteresis width is also preferred to acquire larger response to temperature and a higher efficiency [159].…”

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Thin Films for Advanced Glazing Applications

et al. 2016

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Functional thin films provide many opportunities for advanced glazing systems. This can be achieved by adding additional functionalities such as self-cleaning or power generation, or alternately by providing energy demand reduction through the management or modulation of solar heat gain or blackbody radiation using spectrally selective films or chromogenic materials. Self-cleaning materials have been generating increasing interest for the past two decades. They may be based on hydrophobic or hydrophilic systems and are often inspired by nature, for example hydrophobic systems based on mimicking the lotus leaf. These materials help to maintain the aesthetic properties of the building, help to maintain a comfortable working environment and in the case of photocatalytic materials, may provide external pollutant remediation. Power generation through window coatings is a relatively new idea and is based around the use of semi-transparent solar cells as windows. In this fashion, energy can be generated whilst also absorbing some solar heat. There is also the possibility, in the case of dye sensitized solar cells, to tune the coloration of the window that provides unheralded external aesthetic possibilities. Materials and coatings for energy demand reduction is highly desirable in an increasingly energy intensive world. We discuss new developments with low emissivity coatings as the need to replace scarce indium becomes more apparent. We go on to discuss thermochromic systems based on vanadium dioxide films. Such systems are dynamic in nature and present a more sophisticated and potentially more beneficial approach to reducing energy demand than static systems such as low emissivity and solar control coatings. The ability to be able to tune some of the material parameters in order to optimize the film performance for a given climate provides exciting opportunities for future technologies. In this article, we review recent progress and challenges in these areas and provide a perspective for future trends and developments.

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Section: Improving the Aesthetics Of Thermochromic Filmsmentioning

confidence: 99%

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Thin Films for Advanced Glazing Applications

et al. 2016

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“…Vanadium dioxide (VO 2 ) is famous for its metal-insulator transition (MIT) near room temperature accompanied by giant and abrupt changes in electrical and optical properties [1][2][3][4][5][6][7][8]. Especially, this MIT can be finished in ∼80 fs in a photo-induced transition experiment [9].…”

Section: Introductionmentioning

confidence: 99%

“…Especially, this MIT can be finished in ∼80 fs in a photo-induced transition experiment [9]. Owing to the excellent MIT properties, VO 2 film has attracted great interest for a wide variety of potential applications such as optical storage devices, smart windows, switching elements [1][2][3][4][5][6][7][8]. More importantly, a giant change in terahertz (THz) transmission was observed when VO 2 film undergoes the MIT which can be triggered not only by temperature [10,11] but also by light [1] or THz field [12].…”

Section: Introductionmentioning

confidence: 99%