Tungsten-based glasses for photochromic, electrochromic, gas sensors, and related applications: A review

Ataalla, M.; Afify, Ahmed S.; Hassan, Mohamed; Abdallah, Mohamed; Milanova, M.; Aboul‐Enein, Hassan Y.; Mohamed, Amr

doi:10.1016/j.jnoncrysol.2018.03.050

Cited by 65 publications

(31 citation statements)

References 105 publications

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“…Therefore, it has been used in different applications including smart windows [21], photocatalysts [22], solar cells [23], humidity sensors [24], and gas sensors [25]. Moreover, due to its excellent coloration efficiency [26], WO3 is the most used chromogenic material in photochromic, electrochromic, and gasochromic applications [27].…”

Section: Wo3 and Its Crystal Structurementioning

confidence: 99%

Gasochromic WO3 Nanostructures for the Detection of Hydrogen Gas: An Overview

Mirzaei

Kim

et al. 2019

Applied Sciences

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Hydrogen is one of the most important gases that can potentially replace fossil fuels in the future. Nevertheless, it is highly explosive, and its leakage should be detected by reliable gas sensors for safe operation during storage and usage. Most hydrogen gas sensors operate at high temperatures, which introduces the risk of hydrogen explosion. Gasochromic WO3 sensors work based on changes in their optical properties and color variation when exposed to hydrogen gas. They can work at low or room temperatures and, therefore, are good candidates for the detection of hydrogen leakage with low risk of explosion. Once their morphology and chemical composition are carefully designed, they can be used for the realization of sensitive, selective, low-cost, and flexible hydrogen sensors. In this review, for the first time, we discuss different aspects of gasochromic WO3 gas sensor-based hydrogen detection. Pristine, heterojunction, and noble metal-decorated WO3 nanostructures are discussed for the detection of hydrogen gas in terms of changes in their optical properties or visible color. This review is expected to provide a good background for research work in the field of gas sensors.

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Section: Wo3 and Its Crystal Structurementioning

confidence: 99%

Gasochromic WO3 Nanostructures for the Detection of Hydrogen Gas: An Overview

Mirzaei

Kim

et al. 2019

Applied Sciences

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“…Electrochromic (EC) cell, on the other hand, enabling the dynamic control of daylight to optimize the solar heat passing as well as outdoor views with fast switching between transparent and opaque states. In this regard, tungsten trioxide (WO 3 ) is a promising chromogenic material which undergoes reversible color changes based on redox reaction with UV irradiation or with an applied low voltage electric field 6–8 . A thin film of WO 3 with either crystalline or amorphous structure may be prepared by various physical and chemical methods, such as sputtering, 9 chemical vapor deposition, 10 spray deposition, 11 electrodeposition 12 and so‐gel technique 13 .…”

Section: Introductionmentioning

confidence: 99%

In situ sol–gel synthesis of tungsten trioxide networks in polymer electrolyte: Dual‐functional solid state chromogenic smart film

Azarian

Wootthikanokkhan

2020

J of Applied Polymer Sci

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The novel electro‐photochromic solid electrolyte films were successfully synthesized by in situ sol–gel synthesis of tungsten trioxide (WO3) working electrode within gelatin/lithium cosolvent system. The transparent free‐standing single‐layer film with adhesiveness and flexibility, darken significantly under the UV radiation with photo‐response time of 30 s and gradually reversed once the source of UV was blocked. Moreover, casted film on the indium tin oxide (ITO) glass showed electrochromic (EC) behavior as well in presence of ion storage counter electrode. X‐ray diffraction analysis indicates the amorphous nature of an in situ synthesized gelatin‐based film. The prepared film containing 30 wt% LiClO4 and 10 wt% WO3 (sample designated as GLi30W10) shows ionic conductivity value of 1.1 × 10−4 S/cm. The EC performances of the device with the following configuration; ITO/GLi30W10/NiO/ITO, was investigated by means of UV and cyclic voltammograms. Good performances and fast electro‐response times (2 s/1 s) of the device were demonstrated with coloration efficiency of 51.54 cm2/C.

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“…9,10,14 Also, they find many applications in nonlinear devices such as optical lenses, acousto-optic modulators and frequency converters (especially, in the UV region). 13,15 The structure of Li 2 O-B 2 O 3 glasses consists of B-O network in terms of triangular borate [BO 3 ] units as well as tetrahedral coordinated borate [BO 4 ] units. 10,14 Cozar et al 16 have reported the structural modifications due to the vanadyl ions (VO 2þ ) in lithium borate glasses as a function of V 2 O 5 content by the IR and EPR studies.…”

Section: Introductionmentioning

confidence: 99%

“…Amalgamation of WO 3 in the glass composition possibly will improve thermal stability, refractive index, nonlinear susceptibility and photosensitivity of oxide glasses significantly. 15 The existence of WO 3 content in lithium borate glasses makes them suitable in optoelectronic devices. 13 Moreover, the glasses doped with WO 3 are widely investigated for many applications in smart glass technologies like electrochromism, photochromism and photocatalysis.…”

Section: Introductionmentioning

confidence: 99%

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Dielectric dispersion, linear and nonlinear optical properties of Li₂O–WO₃–B₂O₃: V₂O₅ glasses

Rao¹,

Thirmal²,

Rao

2020

J. Adv. Dielect.

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40 Li2O–5 WO3–(55-[Formula: see text]) B2O3: [Formula: see text]V2O5 (mol%) for [Formula: see text] glasses were prepared by melt-quenching. Electric polarization was described in terms of the dielectric constant ([Formula: see text]) and loss ([Formula: see text]). Mixed conduction phenomenon was explained by redox pairs [Formula: see text] and [Formula: see text] at high temperatures. Electronic polarizability ([Formula: see text]) was determined over a range of frequencies (100[Formula: see text]Hz–100[Formula: see text]kHz) and temperatures (30–[Formula: see text]C). The change of boron coordination in the glass network was explained with the aid of temperature coefficient of polarizability ([Formula: see text]). Nonlinear susceptibility ([Formula: see text]) and optical band gap ([Formula: see text]) were studied as a function of concentration of V2O5. The highest values of [Formula: see text] and [Formula: see text] were obtained at [Formula: see text][Formula: see text]mol%. These glasses may find potential practical applications in the fields of solid-state ionics and nonlinear optics.

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Tungsten-based glasses for photochromic, electrochromic, gas sensors, and related applications: A review

Cited by 65 publications

References 105 publications

Gasochromic WO3 Nanostructures for the Detection of Hydrogen Gas: An Overview

Gasochromic WO3 Nanostructures for the Detection of Hydrogen Gas: An Overview

In situ sol–gel synthesis of tungsten trioxide networks in polymer electrolyte: Dual‐functional solid state chromogenic smart film

Dielectric dispersion, linear and nonlinear optical properties of Li₂O–WO₃–B₂O₃: V₂O₅ glasses

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Tungsten-based glasses for photochromic, electrochromic, gas sensors, and related applications: A review

Cited by 65 publications

References 105 publications

Gasochromic WO3 Nanostructures for the Detection of Hydrogen Gas: An Overview

Gasochromic WO3 Nanostructures for the Detection of Hydrogen Gas: An Overview

In situ sol–gel synthesis of tungsten trioxide networks in polymer electrolyte: Dual‐functional solid state chromogenic smart film

Dielectric dispersion, linear and nonlinear optical properties of Li2O–WO3–B2O3: V2O5 glasses

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Dielectric dispersion, linear and nonlinear optical properties of Li₂O–WO₃–B₂O₃: V₂O₅ glasses