Optical properties of chemical vapor deposited thin films of molybdenum and tungsten based metal oxides

Gesheva, K.A.; Szekeres, A.; Ivanova, T.

doi:10.1016/s0927-0248(02)00267-2

Cited by 154 publications

(98 citation statements)

References 23 publications

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“…The transmittance varies with the film thickness, though the films remain transparent at x below 0.3 [113]. Due to the existence of the fundamental absorption edge, as previously reported in the literature, the reduction in the transmittance spectra at the wavelength of ∼350 nm is observed [114] and this is seen to be almost similar for different thickness of WO3-x films [112]. The oscillation of the film is directly related to the film thickness which is from the optical interference due to the multilayered components [115].…”

Section: Ec Device Smart Windowsupporting

confidence: 58%

Smart Window Technologies: Electrochromics and Nanocellulose thin film Membranes and Devices

2017

SDRP-JNMS

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ABSTRACT:Strategies for incorporating energy-efficiency requirements into building standards have been implemented by governments in developed countries in order to introduce the concept of green nanotechnology. Substituting regular glass windows in residential/commercial buildings with smart windows is the objective. The smart window is to function as electric dimming glass that is to be built with innovative nanomaterial based membranes/ coatings. Currently, the regular windows are made of glass and curtains/blinds are used to block sun light; eliminating such elements is of importance due to its limited functionality. Though these curtains/blinds blocks UV and prevents sun light illumination inside the rooms, but there are additional issues such as health hazards (e.g. dust and germ collection especially in hospitals) relating to asthma problems, disposal/recycling issues, regular cost, and maintenance which are some of the possible glitches. The smart window is expected to block harmful UV light and provide controlled privacy while also eliminating the problems related to curtains/blinds. Electrochromic (EC) smart windows are already in use that varies the throughput of visible light by electrical voltage or by solar energy application and are able to provide energy efficiency and indoor comfort. These smart windows comprises of electrochromic materials such as LixWO2.89 and HxNiO2 as cathodic and anodic oxide films, respectively, and other complex polymers, which are complicated to create, expensive and some are hazardous in nature. Nanocellulose (achieved from wood/pulp product) is already being used in flexible electronics, so nanomaterial membrane based suspended particle device (SPD) technology for smart window is a probable alternative to EC devices, but still under research. This paper reviews, introduces and discusses the present situation of both (EC and SPD) options for the state-of-the-art smart windows and its applications while also provide ample references to current literature of particular relevance and thereby, hopefully, an easy entrance to the research field. Also the paper presents an outlook for an innovative technology for smart-windows with SPD-EC technology to work as dimming glass on voltage application while also induce the capability of solar applications in smart windows leading to green nanotechnology in buildings.

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Section: Ec Device Smart Windowsupporting

confidence: 58%

Smart Window Technologies: Electrochromics and Nanocellulose thin film Membranes and Devices

2017

SDRP-JNMS

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“…The most widely studied oxide is tungsten oxide [5]. Its advantages are high coloration efficiency, relatively low price, non-toxic nature, the dark blue color of its absorbing state which is acceptable for most applications and huge variety of deposition methods for thin films production [6].…”

Section: Introductionmentioning

confidence: 99%

Influence of Dopant Concentration on the Electrochromic Properties of Tungsten Oxide Thin Films

Meenakshi

Gowthami

Perumal

et al. 2015

Electrochimica Acta

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“…However, different techniques have been used for the preparation of amorphous and crystalline electrochromic MoO 3 films, such as sputtering [5], chemical vapor deposition [6], spray pyrolysis [7]. The considerable differences in deposition methods and conditions produce differences in structural, optical, morphological, as well as in the electrochemical properties.…”

Section: Introductionmentioning

confidence: 99%

“…Shaoqin Liu et al [10] reported the electrochromic behaviour of MoO 3 films in H 2 SO 4 electrolyte solution. The cyclic voltammetry of MoO 3 films in 0.3 M LiClO 4 AE PC electrolyte solution was studied by Gesheva et al [6]. The electrochromic device performance of MoO 3 films was also studied by constructing the three electrode electrochromic device (ECD) cells.…”

Section: Introductionmentioning

confidence: 99%

An electrochromic device (ECD) cell characterization on electron beam evaporated MoO3 films by intercalating/deintercalating the H+ ions

Sivakumar

Gopinath

Jayachandran

et al. 2007

Current Applied Physics

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Optical properties of chemical vapor deposited thin films of molybdenum and tungsten based metal oxides

Cited by 154 publications

References 23 publications

Smart Window Technologies: Electrochromics and Nanocellulose thin film Membranes and Devices

Smart Window Technologies: Electrochromics and Nanocellulose thin film Membranes and Devices

Influence of Dopant Concentration on the Electrochromic Properties of Tungsten Oxide Thin Films

An electrochromic device (ECD) cell characterization on electron beam evaporated MoO3 films by intercalating/deintercalating the H+ ions

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