Untitled

Béteille, F.; Livage, Jacques

doi:10.1023/a:1008679408509

Cited by 156 publications

(78 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Sol-gel methods for the formation of thin films of vanadium (IV) oxide have seen the greatest variety of dopant ions used with most of the first row transition metals having been used [37][38][39][40]. Other metal ions have also been doped into the vanadium (IV) oxide lattice by sol-gel methods, including gold [41], molybdenum [42], niobium [43], and aluminium [37]. The co-doping of molybdenum and tungsten, or tungsten and titanium into the vanadium (IV) oxide lattice has also been shown to give very low thermochromic transition temperatures.…”

Section: Tc Coatingmentioning

confidence: 99%

Thermochromic Coatings for Intelligent Architectural Glazing

Parkin

Binions

Piccirillo

et al. 2008

JNanoR

View full text Add to dashboard Cite

Abstract. Thermochromic glazing is a type of intelligent glazing; one where the properties of the glazing change according to some external stimulus. More particularly a thermochromic window is a device that changes its transmission and reflectance properties at a critical temperature (T c ). At this specific temperature the material undergoes a semi-conductor to metal transition. At temperatures lower than T c the window lets all of the solar energy that hits it through. At temperatures above T c the window reflects the infra-red portion of solar energy. In such a way thermochromic windows may help reduce air conditioning and heating costs leading to more energy efficient buildings. This review details the nature of the semi-conductor to metal transition and indicates how substitutional doping within a crystal lattice can be used to manipulate and fine tune the critical temperature. Also detailed is the underlying science and methodologies so far employed in the production of thermochromic thin films.

show abstract

Section: Tc Coatingmentioning

confidence: 99%

Thermochromic Coatings for Intelligent Architectural Glazing

Parkin

Binions

Piccirillo

et al. 2008

JNanoR

View full text Add to dashboard Cite

show abstract

“…[1] This class of material is considered interesting because it shows a large variation of optical and electrical properties with temperature, thus making materials such as VO 2 (M) candidates for applications involving electrical or optical switching elements (memory devices). [2] The semiconductor-to-metal T c in VO 2 can be lowered further by doping with ions such as molybdenum, [3] tin, [4] niobium, [5] aluminum, [6] and gold. [7] It has been found that incorporation of tungsten reduces the T c of VO 2 (M) by the greatest extent [6,[8][9][10][11][12][13] in comparison with the other metals and, therefore, the growth of tungsten-doped VO 2 (M) films will be the focus of this paper.…”

Section: Introductionmentioning

confidence: 99%

“…[2] The semiconductor-to-metal T c in VO 2 can be lowered further by doping with ions such as molybdenum, [3] tin, [4] niobium, [5] aluminum, [6] and gold. [7] It has been found that incorporation of tungsten reduces the T c of VO 2 (M) by the greatest extent [6,[8][9][10][11][12][13] in comparison with the other metals and, therefore, the growth of tungsten-doped VO 2 (M) films will be the focus of this paper. Tungsten-doped thermochromic VO 2 (M) films deposited by physical vapor deposition (PVD) and sol-gel methods can result in a reduction in T c of 24°C per at.-% without deterioration of the thermochromism.…”

Section: Introductionmentioning

confidence: 99%

Tungsten‐Doped Vanadium Oxides Prepared by Direct Liquid Injection MOCVD

Vernardou

Pemble

Sheel

2007

Chemical Vapor Deposition

View full text Add to dashboard Cite

This paper examines the effect of doping on vanadium(IV) oxide (VO 2 (M)) coatings on glass, using atmospheric-pressure, direct liquid injection metal-organic (DLI-MO)CVD, which potentially may find application as part of smart glazing units. It is found that tungsten-doped VO 2 (M) deposited on commercial SiO 2 -precoated glass using a 0.1 M solution of vanadyl(IV) acetylacetonate (VO(acac) 2 ) and tungsten (VI) ethoxide (W(OC 2 H 5 ) 5 ) in methanol shows a reduction in thermochromic transition temperature (T c ) from 60°C in VO 2 (M) to 35°C in V 0.98 W 0.02 O 2 . This finding is discussed in terms of various atomic percentages of tungsten and oxygen flow rates. The crystallinity, composition, morphology, optical properties, uniformity, and oxidation phase of the films are evaluated by X-ray diffraction (XRD), Rutherford backscattering spectroscopy (RBS), scanning electron microscopy (SEM), IR reflectance-transmittance, and Raman spectroscopy, respectively. The relationship between dopant concentration and T c in the most applicable range for solar window coatings is refined by formation of a single-phase film and precise determination of these parameters.

show abstract

“…It is not well understood how to obtain low hysteresis widths, although uniform particle size has been suggested as one possible route [12]. In any case, the vast majority of samples in the literature have widths of 5˚C -10 ˚C [16,17,[26][27][28][29][30]. Which gives a comparable or moderately enhanced performance when compared to the absorbing glass, and a significantly improved performance over the sputtered silver glass.…”

Section: Discussionmentioning

confidence: 99%

“…Energy Plus software developed by the Lawrence Berkeley National Laboratory [26] and US Department of Energy was used to perform energy simulations and analysis. Energy Plus TM is an energy analysis and thermal load simulation program based on a user's description of a building from the perspective of the building's physical make-up, associated mechanical systems, etc.…”

Section: Methodsmentioning

confidence: 99%

The Effect of Transition Hysteresis Width in Thermochromic Glazing Systems

Warwick¹,

Ridley²,

Binions³

2013

OJEE

View full text Add to dashboard Cite

Thermochromic glazing theoretically has the potential to lead to a large reduction in energy demand in modern buildings by allowing the transmission of visible light for day lighting whilst reducing unwanted solar gain during the cooling season, but allowing useful solar gain in the heating season. In this study building simulation is used to examine the effect of the thermochromic transition hysteresis width on the energy demand characteristics of a model system in a variety of climates. The results are also compared against current industry standard glazing products. The results suggest that in a warm climate with a low transition temperature and hysteresis width energy demand can be reduced by up to 54% compared to standard double glazing.

show abstract

Untitled

Cited by 156 publications

References 8 publications

Thermochromic Coatings for Intelligent Architectural Glazing

Thermochromic Coatings for Intelligent Architectural Glazing

Tungsten‐Doped Vanadium Oxides Prepared by Direct Liquid Injection MOCVD

The Effect of Transition Hysteresis Width in Thermochromic Glazing Systems

Contact Info

Product

Resources

About