Nickel oxide-based photochromic composite films

Miyazaki, Hitoshi; Matsuura, Takahiro; Ota, Toshitaka

doi:10.2109/jcersj2.16136

Cited by 14 publications

(8 citation statements)

References 15 publications

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“…For all the composite films, the peaks were observed at around 520 cm -1 due to Ni-OH bending vibration and around 464 cm -1 due to Ni-O stretching vibration (Miyazaki, Matsuura, & Ota, 2016;Ramesh & Kamath, 2006). The other absorption peaks were attributed to the urethane matrix.…”

Section: Resultsmentioning

confidence: 95%

“…Figure 4 illustrates the UV-vis spectra for the composite films before and after 30 min UV irradiation (the bleached film was placed in the dark for 48 h before the measurement). All the films showed bleaching property by UV irradiation; this was because the valence state of Ni in the film was reduced from "+3" to "+2" (Miyazaki, Matsuura, & Ota, 2016). After UV irradiation, the bleached film was placed in the dark; this caused the transmittance to return to values close to that of the initial film.…”

Section: Resultsmentioning

confidence: 99%

“…In our previous investigation, we fabricated NiO nanoparticles-embedded composite films using nickel nitrate methanol solution and transparent urethane resin (Miyazaki, Matsuura, & Ota, 2016). The NiO-based composite films showed a reversible photochromic property by UV irradiation, which was similar to the electrochromic properties of NiO-based thin films.…”

Section: Introductionmentioning

confidence: 93%

“…The NiO-based composite films showed a reversible photochromic property by UV irradiation, which was similar to the electrochromic properties of NiO-based thin films. In addition, the bleaching and coloring rate of NiO-based composite films was large while the transmittance modulation was small (Miyazaki, Matsuura, & Ota, 2016).…”

Section: Introductionmentioning

confidence: 98%

“…Similarly, Co addition is expected to have similar effects on the optical characteristics of NiO photochromism. In the present investigation, we fabricated Co doped NiO-based composite films according to a previous method (Miyazaki, Matsuura, & Ota, 2016) and evaluated the effects of Co addition on the photochromic properties of NiO.…”

Section: Introductionmentioning

confidence: 99%

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Improvement in Photochromic Property of Nickel Oxide-Based Photochromic Composite Films by Cobalt Addition

Miyazaki¹,

Eimori²,

Matsuura³

et al. 2017

JMSR

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Nickel oxide (NiO)-based composite films with various Cobalt/Nickel (Co/Ni) ratios were fabricated, and the photochromic properties of the resulting films were evaluated. The NiO particle sizes in the composite films with Co/Ni ratios of 0~0.02 were 40~70 nm. Increase in the Co addition ratio to the composite films caused a decrease in the initial transmittance of the films, and the films with Co/Ni ratio of 0.005 and 0.01 showed a larger transmittance modulation. Co addition caused an increase in the bleaching and coloring rates, which were the largest in the film with Co/Ni ratio of 0.005.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Improvement in Photochromic Property of Nickel Oxide-Based Photochromic Composite Films by Cobalt Addition

Miyazaki¹,

Eimori²,

Matsuura³

et al. 2017

JMSR

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Electrochromic Oxide‐based Materials and Devices for Glazing in Energy‐efficient Buildings

Granqvist

2018

Transparent Conductive Materials

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UV Photochromism in Transition Metal Oxides and Hybrid Materials

Kayani

Kuriakose

Monshipouri

et al. 2021

Small

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Limited levels of UV exposure can be beneficial to the human body. However, the UV radiation present in the atmosphere can be damaging if levels of exposure exceed safe limits which depend on the individual the skin color. Hence, UV photochromic materials that respond to UV light by changing their color are powerful tools to sense radiation safety limits. Photochromic materials comprise either organic materials, inorganic transition metal oxides, or a hybrid combination of both. The photochromic behavior largely relies on charge transfer mechanisms and electronic band structures. These factors can be influenced by the structure and morphology, fabrication, composition, hybridization, and preparation of the photochromic materials, among others. Significant challenges are involved in realizing rapid photochromic change, which is repeatable, reversible with low fatigue, and behaving according to the desired application requirements. These challenges also relate to finding the right synergy between the photochromic materials used, the environment it is being used for, and the objectives that need to be achieved. In this review, the principles and applications of photochromic processes for transition metal oxides and hybrid materials, photocatalytic applications, and the outlook in the context of commercialized sensors in this field are presented.

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Nickel oxide-based photochromic composite films

Cited by 14 publications

References 15 publications

Improvement in Photochromic Property of Nickel Oxide-Based Photochromic Composite Films by Cobalt Addition

Improvement in Photochromic Property of Nickel Oxide-Based Photochromic Composite Films by Cobalt Addition

Electrochromic Oxide‐based Materials and Devices for Glazing in Energy‐efficient Buildings

UV Photochromism in Transition Metal Oxides and Hybrid Materials

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