Electrooptic phenomena in guest-host PMMA-SiC nanocrystals

Johann Bouclé (1, 2) , Abdelhadi Kassiba (3) , I.V. Kityk (4) , Malgorzata Makowska-Janusik (3) , J. Sanetra (5) , Nathalie Herlin-Boime (2) , Alain Bulou (3) , S. Kodjikian (6)

1 MINACOM
2 LFP - URA 2453 - Laboratoire Francis PERRIN
3 LPEC - Laboratoire de physique de l'état condensé
4 Electrical Engineering Department
5 INSTITUTE OF PHYSICS - Institute of Physics
6 LdOF - Laboratoire des oxydes et fluorures

Electro-optic (EO) phenomena are measured in electrically poled films (0.5 μm) based on large-sized SiC nanocrystallites (nc-SiC) as chromophores and polymethyl-methacrylate (PMMA) as host matrices. Both linear electro-optic (LEO) and quadratic coefficients are obtained, and, for nc-SiC contents ranging from 1% to 3% by weight units, the largest achieved effective LEO coefficient is found close to 26 pm/V at λ = 0.633 μm. Comparison with the electrically active host matrix of poly(vinyl-carbazole) (PVK) shows that the polarization at the nc-SiC boundaries with the polymer play a crucial role on the EO phenomena. Moreover, the relative interface area between the polymer and the SiC nanocrystallites contributes critically to the observed electro-optic effects.

Domaines: Micro et nanotechnologies/Microélectronique

Johann Bouclé, Abdelhadi Kassiba, I.V. Kityk, Malgorzata Makowska-Janusik, J. Sanetra, et al.. Electrooptic phenomena in guest-host PMMA-SiC nanocrystals. Optics Communications, 2005, 246, pp.415-420. ⟨10.1016/j.optcom.2004.11.004⟩. ⟨hal-00916056⟩