Local electrooptic effect of the SiC large-sized nanocrystallites incorporated in polymer matrices

Johann Bouclé (1, 2) , Abdelhadi Kassiba (1) , J. Emery (1) , I.V. Kityk (3) , Malgorzata Makowska-Janusik (1) , J. Sanetra (4) , Nathalie Herlin-Boime (2) , M. Mayne (2)

1 LPEC - Laboratoire de physique de l'état condensé
2 LFP - URA 2453 - Laboratoire Francis PERRIN
3 Electrical Engineering Department
4 INSTITUTE OF PHYSICS - Institute of Physics

Linear electro-optical effect (LEO) is experimentally demonstrated in large-sized (10 and 30 nm) silicon carbide nanocrystallites (nc-SiC) incorporated in poly(N-vinylcarbazole) (PVK) blended with coumarine (MK). By using the angle-dependent polarimetric method at λprobe=694 nm, in both static and photoinduced regimes, we have shown that embedding the nc-SiC within polymer host matrices gives rise to an enhancement of the LEO effective parameters up to 1.325 pm/V. The absence of these phenomena in the separate components--i.e., pure wurtzite-like SiC crystals as well as the organic matrices--suggests that the observed local electro-optical response is intimately driven by the interfacial hyperpolarizabilities appearing between the nc-SiC and the surrounding organic matrix.

Domaines: Sciences de l'ingénieur [physics]; Micro et nanotechnologies/Microélectronique

Johann Bouclé, Abdelhadi Kassiba, J. Emery, I.V. Kityk, Malgorzata Makowska-Janusik, et al.. Local electrooptic effect of the SiC large-sized nanocrystallites incorporated in polymer matrices. Physics Letters A, 2002, 302, pp.196-202. ⟨10.1016/S0375-9601(02)00965-9⟩. ⟨hal-00916064⟩