A study of the optical and electronic properties of poly (vinylidene fluoride-trifluoroethylene) copolymer thin films

Y. X. Li, L. Yan, R. P. Shrestha, D. Yang, Zoubeida Ounaies, E. A. Irene

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Thin films of poly(vinylidene fluoride-trifluoroethylene) copolymer were prepared by spin casting from methylethylketone solutions onto SiO2, Si, and quartz slides substrates. The films were optically transparent in the 1.5-4.5 eV (830-280 nm) photon energy range and found to be uniform and smooth as determined using near ultraviolet-visible spectrum and atomic force microscopy, respectively. A Cauchy model was used to fit spectroscopic ellipsometry (SE) data to obtain the refractive index in 1.5-4.5 eV (830-280 nm) that was found to decrease for thinner films. SE performed at several sensitive angles of incidence has revealed slight optical anisotropy for films thicker than 120 nm. Annealing in vacuum densified the films as evidenced by an increase in the refractive index and a decrease in the film thickness. Capacitance versus voltage measurements revealed a static dielectric constant of about 7.5.

Original languageEnglish (US)
Pages (from-to)283-288
Number of pages6
JournalThin Solid Films
Volume513
Issue number1-2
DOIs
StatePublished - Aug 14 2006

Fingerprint

Spectroscopic ellipsometry
vinylidene
Electronic properties
ellipsometry
fluorides
Refractive index
copolymers
Copolymers
Optical properties
refractivity
Optical anisotropy
optical properties
Thin films
Quartz
Capacitance measurement
Voltage measurement
ultraviolet spectra
thin films
visible spectrum
electronics

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Li, Y. X. ; Yan, L. ; Shrestha, R. P. ; Yang, D. ; Ounaies, Zoubeida ; Irene, E. A. / A study of the optical and electronic properties of poly (vinylidene fluoride-trifluoroethylene) copolymer thin films. In: Thin Solid Films. 2006 ; Vol. 513, No. 1-2. pp. 283-288.
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A study of the optical and electronic properties of poly (vinylidene fluoride-trifluoroethylene) copolymer thin films. / Li, Y. X.; Yan, L.; Shrestha, R. P.; Yang, D.; Ounaies, Zoubeida; Irene, E. A.

In: Thin Solid Films, Vol. 513, No. 1-2, 14.08.2006, p. 283-288.

Research output: Contribution to journalArticle

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AU - Li, Y. X.

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