On the determination of anisotropy in polymer thin films: A comparative study of optical techniques

  • Campoy-Quiles M
  • Nelson J
  • Etchegoin P
 et al. 
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Abstract

We have used seven different techniques to measure the anisotropic refractive index of poly(vinylcarbazole) films. These techniques are: two types of variable angle spectroscopic ellipsometry (VASE) with multiple sample analysis, Interference enhanced VASE, Transmittance combined with VASE, Polarised Reflectance, beta-scan VASE, and prism coupling. We have found the average ordinary and extraordinary indices at 633 nm to be no = nTE = 1.675 ± 0.008, and ne = nTM = 1.722 ± 0.018, respectively, consistent amongst methods and conclusive on the magnitude of Δn in polymer films. (Graph Presented) © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.

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Authors

  • M. Campoy-Quiles

  • J. Nelson

  • P.G. Etchegoin

  • D.D.C. Bradley

  • V. Zhokhavets

  • G. Gobsch

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