Optical anisotropy in thin films of a blue electroluminescent conjugated polymer

Optical anisotropy in thin films of a blue electroluminescent conjugated polymer

We determined the anisotropic optical constants of thin films of a conjugated polymer, the methyl-substituted ladder-type poly(paraphenylene) (m-LPPP), over a large spectral range between 1.55 and 3.5 eV. In the subgap region the anisotropic refractive indices were obtained via waveguiding experimen...

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Veröffentlicht in:Thin solid films 1997-04, Vol.298 (1), p.138-142
Hauptverfasser: Sturm, J, Tasch, S, Niko, A, Leising, G, Toussaere, E, Zyss, J, Kowalczyk, T.C, Singer, K.D, Scherf, U, Huber, J
Format: Artikel
Sprache:eng
Schlagworte:
Anisotropy
Luminescence
Optical properties
Polymers
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Zusammenfassung:We determined the anisotropic optical constants of thin films of a conjugated polymer, the methyl-substituted ladder-type poly(paraphenylene) (m-LPPP), over a large spectral range between 1.55 and 3.5 eV. In the subgap region the anisotropic refractive indices were obtained via waveguiding experiments at 1.55 eV and 1.95 eV. Propagation loss measurements revealed that the absorption coefficient parallel to the polymer film surface is very small (
ISSN:0040-6090
1879-2731
DOI:10.1016/S0040-6090(96)09159-6