Optical absorption in co-evaporated V2O5-TeO2 thin films

Yagoubi, B.; Hogarth, C. A.

doi:10.1007/bf00588289

Cited by 8 publications

(1 citation statement)

References 9 publications

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“…Optical data on evaporated W-Ce oxide, to mention another example, were taken to indicate microcrystallinity. 65 We have not yet resolved the microstructure of our sputter deposited films, but, as we will argue shortly, a consistent picture of the decreased electrochromism will emerge if we presume the existence of locally CeO 2 -like structural entities.…”

Section: Discussionmentioning

confidence: 95%

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

Kullman

Azens

Granqvist

1997

Journal of Applied Physics

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Films of Ti-La oxide, Ti-Ce oxide, and Ti-Pr oxide were produced by reactive dc magnetron sputtering. Their composition was determined by Rutherford backscattering spectrometry. X-ray diffractometry and infrared absorption spectroscopy indicated that the microstructure was heavily disordered and in most cases Ti-oxidelike. Electrochemical Li intercalation/deintercalation was studied by cyclic voltammetry, and ensuing optical data were recorded by spectrophotometry. Ce addition diminished the electrochromism, and films with Ce/Ti atom ratios exceeding 0.3 were almost fully transparent irrespective of their lithiation, pointing at the potential applications of such films as counter electrodes in transparent electrochromic devices. The optical and electrochemical data were discussed in terms of a model based on electron insertion/extraction in 4 f states located in the gap between the valence and conduction bands of CeO 2 .

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Section: Discussionmentioning

confidence: 95%

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

Kullman

Azens

Granqvist

1997

Journal of Applied Physics

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Optical and electrical properties of vanadium pentoxide thin films

Krishnakumar

Menon

1996

Phys. Stat. Sol. (a)

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Electrwhromic vanadium pentoxide (V205) thin films are prepared by the physical vapour deposition method using an electron beam gun. The transmission spectra of V2O5 thin films are measured and studied before and after UV irradiation. It is observed that the optical transmission minimum which occurs at 320nm does not change with irradiation. The measurement of optical band gaps of V205 thin films before and after irradiation shows that the band gap increases due to irradiation. The electrical conductivity of the films as a function of time of irradiation is found to decrease rapidly and reaches a steady value with time when the irradiation is cut off. V205 thin films can be used for storing optical information and for development of optical memory switching devices. Activation energies for different thicknesses of thin films are reported.

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Materials for electrodes: Amorphous and thin-films

Julien

Nazri

1994

The Kluwer International Series in Engineering and Computer Science

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Optical absorption in co-evaporated V2O5-TeO2 thin films

Cited by 8 publications

References 9 publications

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

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

Optical and electrical properties of vanadium pentoxide thin films

Materials for electrodes: Amorphous and thin-films

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