Preparation and properties of the oxyfluoride systems V2O5−xFx and VO2−xFx

Bayard, M.; Reynolds, T.G.; Vlasse, Marcus; McKinzie, H.; Arnott, R. J.; Wold, A.

doi:10.1016/0022-4596(71)90090-9

Cited by 41 publications

(10 citation statements)

References 17 publications

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“…However, W- and Mo-doped films do not show the same trend. Although we were not able to effectively determine crystallite sizes because of poor peak statistics of XRD patterns for the different doped films, it has been shown that doping reduces the crystallite size [ 27 , 28 ]. Therefore, the number of crystallites as well as boundaries volume will increase and contribute to trap charge carriers which will result in loss of the metallic behavior.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows

2011

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Thermochromic VO2 thin films have successfully been grown on SiO2-coated float glass by reactive DC and pulsed-DC magnetron sputtering. The influence of substitutional doping of V by higher valence cations, such as W, Mo, and Nb, and respective contents on the crystal structure of VO2 is evaluated. Moreover, the effectiveness of each dopant element on the reduction of the intrinsic transition temperature and infrared modulation efficiency of VO2 is discussed. In summary, all the dopant elements--regardless of the concentration, within the studied range-- formed a solid solution with VO2, which was the only compound observed by X-ray diffractometry. Nb showed a clear detrimental effect on the crystal structure of VO2. The undoped films presented a marked thermochromic behavior, specially the one prepared by pulsed-DC sputtering. The dopants effectively decreased the transition of VO2 to the proximity of room temperature. However, the IR modulation efficiency is markedly affected as a consequence of the increased metallic character of the semiconducting phase. Tungsten proved to be the most effective element on the reduction of the semiconducting-metal transition temperature, while Mo and Nb showed similar results with the latter being detrimental to the thermochromism.

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Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows

2011

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“…7,8,144 Additionally, other physicochemical properties of dopedvanadium oxides, such as the metal-to-insulator phase transition temperature, and band edge energies are significantly altered upon addition of non-oxygen anions in comparison to the parent V x O y material. [194][195][196][197][198][199][200] While the changes observed upon anionically-doping vanadium oxides are Fig. 19.…”

Section: Anionic Dopants In Molecular Vanadium Oxide Assembliesmentioning

confidence: 99%

“…The most prominent method involves the removal of lattice oxygen atoms to form oxygen-vacant sites on the surface of the material. 14,15,[191][192][193] An alternative method to anionically-doping vanadium oxide materials is through the substitution of oxide moieties for non-oxygen anions such as halides, [194][195][196][197][198][199][200] sulfides, [201][202][203] or nitrides. 204,205 Experimental and computational investigations have shown that both physical and chemical properties are significantly influenced by the introduction of these anionic dopants.…”

Section: Anionic Dopants In Molecular Vanadium Oxide Assembliesmentioning

confidence: 99%

Atomically precise vanadium-oxide clusters

et al. 2021

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“…4, 5, and 40) or F doping of VO 2 . 5,41 The observed rates of change of the phase transition temperature with doping level for the AEM dopants are (F þ O), which was determined by the analyses of the temperature hysteresis of the transmittance at k ¼ 2500 nm. # c represents the mean value, while the bars show the upper and lower value of the transition temperature (where the former was determined by increasing temperature and the latter by decreasing).…”

Section: Phase Transition Temperaturementioning

confidence: 99%