Electrochromic properties of porous NiO thin films prepared by a chemical bath deposition

Xia, Xinhui; Tu, Jiangping; Zhang, J.; Wang, X.L.; Zhang, W.K.; Huang, Hui

doi:10.1016/j.solmat.2008.01.009

Cited by 408 publications

(210 citation statements)

References 35 publications

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“…For all sets of such CVs, an increase in anodic current after +0.60 V (B) is observed which corresponds to the beginning of the oxygen evolution reaction (OER). These CV features are similar to those obtained for NiO thin films initially prepared by electrodeposition 13 and chemical bath deposition 39 techniques. The anodic and cathodic peak currents increase (Figure 7) with an increase in deposition time, with more electroactive material being available.…”

Section: Resultssupporting

confidence: 80%

Electrochromic and Colorimetric Properties of Nickel(II) Oxide Thin Films Prepared by Aerosol-Assisted Chemical Vapor Deposition

Sialvi

Mortimer

Wilcox

et al. 2013

ACS Appl. Mater. Interfaces

110

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Aerosol-assisted chemical vapor deposition (AACVD) was used for the first time in the preparation of thin-film electrochromic nickel(II) oxide (NiO). The as-deposited films were cubic NiO, with an octahedral-like grain structure, and an optical band gap that decreased from 3.61 to 3.48 eV on increase in film thickness (in the range 500–1000 nm). On oxidative voltammetric cycling in aqueous KOH (0.1 mol dm–3) electrolyte, the morphology gradually changed to an open porous NiO structure. The electrochromic properties of the films were investigated as a function of film thickness, following 50, 100, and 500 conditioning oxidative voltammetric cycles in aqueous KOH (0.1 mol dm–3). Light modulation of the films increased with the number of conditioning cycles. The maximum coloration efficiency (CE) for the NiO (transmissive light green, the “bleached” state) to NiOOH (deep brown, the colored state) electrochromic process was found to be 56.3 cm2 C–1 (at 450 nm) for films prepared by AACVD for 15 min followed by 100 “bleached”-to-colored conditioning oxidative voltammetric cycles. Electrochromic response times were <10 s and generally longer for the coloration than the bleaching process. The films showed good stability when tested for up to 10 000 color/bleach cycles. Using the CIE (Commission Internationale de l’Eclairage) system of colorimetry the color stimuli of the electrochromic NiO films and the changes that take place on reversibly oxidatively switching to the NiOOH form were calculated from in situ visible spectra recorded under electrochemical control. Reversible changes in the hue and saturation occur on oxidation of the NiO (transmissive light green) form to the NiOOH (deep brown) form, as shown by the track of the CIE 1931 xy chromaticity coordinates. As the NiO film is oxidized, a sharp decrease in luminance was observed. CIELAB L*a*b* coordinates were also used to quantify the electrochromic color states. A combination of a low L* and positive a* and b* values quantified the perceived deep brown colored state.

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Section: Resultssupporting

confidence: 80%

Electrochromic and Colorimetric Properties of Nickel(II) Oxide Thin Films Prepared by Aerosol-Assisted Chemical Vapor Deposition

Sialvi

Mortimer

Wilcox

et al. 2013

ACS Appl. Mater. Interfaces

110

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“…There are many known methods for the NiO/Ni(OH) 2 film deposition: magnetron sputtering [11], vacuum deposition [12], chemical bath deposition [13], sol-gel [14], pulse laser deposition [15], spray pyrolysis [16] and electrochemical deposition [17].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Electrochromism of Ni(OH)2 films obtained by cathode template method with addition of Al, Zn, Co ions

Kotok

Кovalenko

2017

EEJET

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“…In addition, they are employed as a part of functional sensor layers in chemical sensors (Kumagai et al 1996), and used in batteries (Puspharajah et al 1997), fuel cell (Wang et al 2002), electrochromic devices (Agrawal et al 1992), solar thermal absorber (Tanaka et al 1996), catalyst for oxygen evolution (Yeh and Matsumura 1997) and photo electrolysis (Bonger et al 1998). Several physical and chemical methods, such as sputtering (Nandy et al 2010), pulsed laser deposition (Xia et al 2008), chemical bath deposition (Wang et al 2012) andsol-gel (Al-Ghamdi et al 2009) have been adopted to prepare NiO films. Spray pyrolysis is simple, low cost and feasible for mass production.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of nanostructured nickel oxide thin films by spray pyrolysis

2012

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Transparent crystalline nanostructured nickel oxide (NiO) thin films were prepared using a simple spray pyrolysis technique from hydrated nickel chloride salt solution (NiCl 2 Á6H 2 O) onto glass and silicon (n-type) substrates at different temperatures (280, 320, 360, and 400°C) and with different solution concentrations (0.025, 0.05, 0.075, and 0.1 M). Structural and morphological properties of the grown NiO films were studied using X-ray diffraction (XRD) and atomic force microscope. Optical properties and chemical analysis of the films were characterized by UV-visible absorption spectra and Fourier transform infrared spectroscopy, respectively. The XRD result showed that the deposited film has an amorphous structure when deposited at temperature of T s = 280°C and concentration of 0.025 M. At higher temperatures (T s = 320, 360, 400°C) and solution concentrations (0.05, 0.075, 0.1 M), the deposited films have cubic polycrystalline structure formed with preferred orientation along (111) plane. The band gap of NiO film increases from 3.4 to 3.8 eV as the molarity decreased from 0.1 to 0.05 M.

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Electrochromic properties of porous NiO thin films prepared by a chemical bath deposition

Cited by 408 publications

References 35 publications

Electrochromic and Colorimetric Properties of Nickel(II) Oxide Thin Films Prepared by Aerosol-Assisted Chemical Vapor Deposition

Electrochromic and Colorimetric Properties of Nickel(II) Oxide Thin Films Prepared by Aerosol-Assisted Chemical Vapor Deposition

Electrochromism of Ni(OH)2 films obtained by cathode template method with addition of Al, Zn, Co ions

Preparation and characterization of nanostructured nickel oxide thin films by spray pyrolysis

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