Electrochromic devices embodying W oxide/Ni oxide tandem films

Azens, A.; Vaivars, G.; Veszelei, Monica; Kullman, L.; Granqvist, Claes‐Göran

doi:10.1063/1.1337091

Cited by 65 publications

(21 citation statements)

References 11 publications

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“…Mixed EC oxides can exhibit properties better than those of the individual components. EC devices comprising W-oxide-based and Ni-oxide-based thin films are especially interesting [85,86] and are used in several varieties of EC glazing [31], including those discussed shortly in Sec.…”

Section: Generic Device Designmentioning

confidence: 99%

Electrochromic materials and devices for energy efficiency and human comfort in buildings: A critical review

Granqvist

Arvizu

Pehlivan

et al. 2018

Electrochimica Acta

390

192

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Electrochromic (EC) materials can be integrated in thin-film devices and used for modulating optical transmittance. The technology has recently been implemented in large-area glazing (windows and glass facades) in order to create buildings which combine energy efficiency with good indoor comfort. This critical review describes the basics of EC technology, provides a case study related to EC foils for glass lamination, and discusses a number of future aspects. Ample literature references are given with the object of providing an easy entrance to the burgeoning research field of electrochromics.

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Section: Generic Device Designmentioning

confidence: 99%

Electrochromic materials and devices for energy efficiency and human comfort in buildings: A critical review

Granqvist

Arvizu

Pehlivan

et al. 2018

Electrochimica Acta

390

192

View full text Add to dashboard Cite

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“…Transition metal oxides with multi-step reduction states have been extensively employed as the electrochromic active materials, which can undergo considerable color changes during electrochemical redox reactions [5,6]. Among such transition metal oxides, tungsten oxide with various oxidation states of WO 3Àx has been recognized as one of the most efficient candidate compared with other electrochromic materials due to its fast optical response time, reversible color changes and high coloration efficiency [2,3,7].…”

Section: Introductionmentioning

confidence: 99%

Electrochromic properties of tungsten oxide nanowires fabricated by electrospinning method

Shim

Kim

Sung

et al. 2009

Solar Energy Materials and Solar Cells

138

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“…that can be described in a band structure mode), with Fermi level changes [2]. NiO is known as a good candidate for EC device (3], but a remaining issue is the residual optical absorption in the 400 <À< 500 nm wavelength range, consequently precluding a fully transparent state [4]. Indeed, the modulation in the ultraviolet band has been rarely studied and reversely most research focus on improving EC behaviors in the wide visible region, mainly because it is thought to be Jess mean ingful to adjust transmittance in the known narrow wavelength range without realizing its relevance to the important color neutrality.…”

mentioning

confidence: 99%

Enhanced electrochromism in short wavelengths for NiO:(Li, Mg) films in full inorganic device ITO/NiO:(Li, Mg)/Ta2O5/WO3/ITO

Dong

Wang

Barnabé

et al. 2018

Electrochimica Acta

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Great interest has been drawn to the electrochromism demonstrated by inorganic materials, leading to various applications including smart windows and displays. NiO, as a cheap material, shows anodic electrochromism and is highly suitable for device applications in conjunction with W0 3 , but its strong optical absorbanoe has been largely overlooked. Herein, improved electrochromic properties in particular in short wavelengths was achieved by co doping of Mg and Li in NiO:(Ll, Mg) thin films grown using RF sputtering. Secondary Ion Mass Spectroscopy technique in combination with X ray Photoelectron Spectroscopy characterization provides direct evidence of the introduction of Mg as well as Li in the film Whatever the Li and Mg content, X Ray Diffraction and Raman spectroscopy studies only bring out the NiO face centered cubic rock sait structure. Electrochemical cycling shows pronounced anodic electro chromism for NiO:(Ll, Mg) thin films. Inorganic ail solid state monolithic multilayered devices are traditionally composed of a pair of electrodes with NiO and WOJ separated by Li containing electrolyte such as LiTa0 3 or LlNb0 3 sputtered from expensive but low efficient ceramic targets. Based on optimal NiO:(Ll, Mg) films, large switchable electrochromism both in visible (-58%) and ultraviolet band (-50%) is reconciled in electrochromic device Glass/ITO/NiO:(Li, Mg)(ra20sfW0 3 /ITO. The co doping of NiO with Mg and Li is capable of simultaneously widening the gap and avoiding the use of Li containing elec trolyte, through NiO pre lithiation. We believe the new, low cost approach would provide references with respect to practical applications desired for their successful commercial mass production.

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Electrochromic devices embodying W oxide/Ni oxide tandem films

Cited by 65 publications

References 11 publications

Electrochromic materials and devices for energy efficiency and human comfort in buildings: A critical review

Electrochromic materials and devices for energy efficiency and human comfort in buildings: A critical review

Electrochromic properties of tungsten oxide nanowires fabricated by electrospinning method

Enhanced electrochromism in short wavelengths for NiO:(Li, Mg) films in full inorganic device ITO/NiO:(Li, Mg)/Ta2O5/WO3/ITO

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