Decreased electrochromism in Li-intercalated Ti oxide films containing La, Ce, and Pr

Kullman, L.; Azens, A.; Granqvist, Claes G.

doi:10.1063/1.365404

Cited by 41 publications

(18 citation statements)

References 91 publications

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“…In Fig. 7, the O-H stretching vibration appears at -3393 cm -~ and the absorption band at -780 cm -1 is characteristic of titanium oxide in accordance with the data observed by Granqvist et al [12]. Vibrational spectroscopic investigations confirm the existence of titanium-oxygen bonds in xerogels and the coatings.…”

Section: Thermal Studiessupporting

confidence: 88%

Sol-Gel derived CeO2:TiO2 coatings for electrochromic devices

Verma

Kar

Agnihotry

et al. 2004

Ionics

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Abstract. Thin films of mixed CeO2-TiO 2 with different Ce/Ti mole ratios were prepared following an alcohol based sol-gel route via the spin coating technique using mixed inorganic-organic [CeC13.7H20 and Ti(OPr)4 ] precursors. Ion storage capacity for films obtained from aged sols was observed to be high. Enhanced titanium oxide content improved the insertion capacity of the corresponding films as was evident from inserted charge determined by multiple step chronoamperometric measurements. Electrochemical, optical, structural and thermal performances showed the suitability of the films in an all solid state electrochromic (transmissive) device with tungsten trioxide (WO3) as electrochromic material and a conductive polymeric electrolyte based on lithium.

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Section: Thermal Studiessupporting

confidence: 88%

Sol-Gel derived CeO2:TiO2 coatings for electrochromic devices

Verma

Kar

Agnihotry

et al. 2004

Ionics

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“…The larger the wavelength is, the higher the coloration efficiency is. In the visible range of wavelengths, all the found values of η are comparable to those for WO 3 films [16] and much higher than those for TiO 2 films [7] prepared by sol-gel techniques and titanium-lanthanide oxides deposited by magnetron sputtering and coloured in a LiClO 4 + PC solution [17].…”

Section: Electrochromic Performancementioning

confidence: 48%

Mixed Nanostructured Ti‐W Oxides Films for Efficient Electrochromic Windows

Định

Ninh

Thảo

et al. 2012

Journal of Nanomaterials

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With the aim to enhance the electrochromic (EC) efficiency and electrochemical stability of electrochromic devices (ECD), mixed nanostructured TiO2/WO3films were prepared by an electrochemical deposition method with the purpose of adding WO3nanoparticles to porous nanocrystalline doctor-blade TiO2(nc-TiO2) films. The results of the characterization of electrochromic properties in 1 M LiClO4+ propylene carbonate (LiClO4+ PC) of both the nc-TiO2/F-doped tin oxide (FTO) and WO3/TiO2/FTO configurations showed the reversible coloration and bleaching of the ECDs. The response time of the ECD coloration of WO3/TiO2/FTO was found to be as small as 2 sec, and its coloration efficiency (CE) as high as 35.7 cm2× C−1. By inserting WO3nanoparticles into the porous TiO2structures, WO3/TiO2heterojunctions were formed in the films, consequently enabling both the CE and electrochemical stability of the working electrodes to be considerably enhanced. Since a large-area WO3/TiO2can be prepared by the doctor-blade technique followed by the electrochemical deposition process, mixed nanostructured Ti-W oxides electrodes constitute a good candidate for smart window applications, taking advantage of the excellent coloration and stability properties as well as the simple and economical fabrication process involved.

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“…The larger is the wavelength, the higher is the coloration efficiency. In the visible range of wavelengths all the values of found are comparable to those for WO 3 films [12] and much higher than those for TiO 2 films [7] prepared by sol-gel techniques and titanium-lanthanide oxides deposited by magnetron sputtering and coloured in a LiClO 4 + PC solution [13].…”

Section: Electrochromic Performancementioning

confidence: 50%