ELECTROCHROMIC AND SURFACE EFFECTS IN <font>MoO</font><sub>3</sub> THIN FILMS

Yahaya, Muhammad; Salleh, Muhamad Mat; Talib, Ibrahim Abu; Mursyidah,

doi:10.1142/9789812791979_0113

Cited by 7 publications

(8 citation statements)

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“…246 Amorphous molybdenum oxide films deposited with electron beam evaporation have also been shown to be suitable for electrochromic applications as a significant change in absorption was observed when the films were doped with Li 2 O. 247 In a more detailed study, electron beam evaporation was employed to carefully study the electrochromic properties versus substrate deposition and post-annealing treatments. The films produced at room temperature that were not annealed exhibited the best electrochromic properties with coloration efficiencies of 30 and 35 cm 2 /C at 633 and 1033 nm, respectively.…”

Section: Moo 3 Electrochromic Propertiesmentioning

confidence: 99%

Layered vanadium and molybdenum oxides: batteries and electrochromics

et al. 2009

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Section: Moo 3 Electrochromic Propertiesmentioning

confidence: 99%

Layered vanadium and molybdenum oxides: batteries and electrochromics

et al. 2009

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“…Compared to the common ion intercalation‐type coloration mechanism for crystalline WO 3 , amorphous WO 3 equipped with the ion insertion‐type coloration mechanism could deliver visible and NIR coupled selectivity with maximum CE of 50–80 cm 2 C −1 and long cyclic life up to 100 000 cycles . In addition to the WO 3 , obvious change in the absorption could be observed for the Li 2 O‐doped amorphous molybdenum oxide film, which was fabricated by spin coating/electron beam evaporation . Amorphous NbO x electrochromic film was prepared by Llordés et al at room temperature, and two different amorphous polymorphs of NbO x were examined .…”

Section: Amos In Other Electrochemical Applicationsmentioning

confidence: 99%

Research Advances of Amorphous Metal Oxides in Electrochemical Energy Storage and Conversion

Yan

Abhilash

Tang

et al. 2018

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possess lower hardness, higher strength, higher elasticity, higher tensile strength, lower internal energy, higher interatomic forces, lower viscosity coefficient, larger surface area, higher chemical stability, and strong corrosion resistance compared with their crystalline counterparts. [1][2][3] Based on the anionic constituents, amorphous materials could be categorized as oxides, sulfides, phosphates, etc. Among them, amorphous metal oxide family is of great importance owing to its widespread applications in a variety of areas such as batteries, supercapacitors, electronics, conducting films, multilayered transistors, electrochromic displays, nonvolatile memories, and the like. [4][5][6] As the basic building blocks, metaloxide (M-O) polyhedra are responsible for the essential features of the electronic band structure in amorphous metal oxides (AMOs). [3] AMO materials differ from their crystalline counterparts in the arrangement of M-O polyhedra, in which a random network arrangement of distorted polyhedra with short-range ordering is presented rather than maintaining perfect periodicity. [7,8] The coordination number of the M-O polyhedra, namely, the number of anions bonded to the metal cation, constitutes a crucially decisive factor for the unique properties of AMOs. Multiple polyhedra are interconnected through different types of sharing configurations known as edge sharing, corner sharing, and face sharing of the oxygen atoms. The combination of different sharing geometries also affects the properties of AMOs. [9] In other words, AMOs are formed by the superposition of the distorted M-O polyhedra to form network arrays through a random package. Long-range structural disorder in the AMO reduces scattering mean free path, and the lack of grain boundaries makes the electronic properties identical within large areas. These unique characteristics make them suitable for flexible electronics such as flexible films, intervening layers, thin film transistors, etc. [10][11][12] In recent years, there are numerous reports pointing out the advantages of AMOs over the crystalline counterparts in many electrochemical applications. [13][14][15][16][17] For example, the inherent disorderliness in the structural arrangement and rich defects are evidenced to be highly constructive to improve the alkali ion diffusion through the lattice. [18,19] As for intercalation-type electrodes in lithium-ion batteries (LIBs), amorphous materials Amorphous metal oxides (AMOs) have aroused great enthusiasm across multiple energy areas over recent years due to their unique properties, such as the intrinsic isotropy, versatility in compositions, absence of grain boundaries, defect distribution, flexible nature, etc. Here, the materials engineering of AMOs is systematically reviewed in different electrochemical applications and recent advances in understanding and developing AMO-based high-performance electrodes are highlighted. Attention is focused on the important roles that AMOs play in various energy storage and conversion technologies...

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“…[1,2] The most frequently used electrochromic compounds include transition metal oxides, such as WO 3 , MoO 3 , TiO 2 , IrO 2 , V 2 O 5 , NiO; inorganic compounds, such as Prussian blue (iron ferrocyanide); and organic polymers, such as polyaniline, polypyrrole, and polythiophene. Among the transition metal oxides possessing electrochromic properties, WO 3 exhibits the best properties and has been investigated most extensively [3][4][5][6]. This has been due principally to its fast response time, coloration efficiency, long lifetime, etc.…”

Section: Introductionmentioning

confidence: 99%