Arrêt de service programmé du vendredi 10 juin 16h jusqu’au lundi 13 juin 9h. Pour en savoir plus
Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

Optical properties of ZnO nanocrystals embedded in PMMA

Abstract :

We report in this work the preparation of thin films of ZnO nanocrystals synthesized and dispersed in polymethylmethacrylate using a easy route and deposited in class substrate by spin coating technique. Their structural and optical properties were investigated by X-ray, absorption and photoluminescence spectroscopy. The XRD patterns exhibit sharp peaks at 2θ corresponding to the hexagonal (wurtzite) phase diffraction planes. The optically characterization, exhibit a wide absorption band in the range of the study and a large emission band with three peaks at 481.5, 531.09 and at 671.28 nm.The crystallites radius (R) was estimated by applying the effective mass approximation model and was about 1.8 nm. From measurements of second order susceptibilities using harmonic generation technique at λ=1,064 nm  in picoseconds regime we deduced λ2eff equal to 5.95×10−10  m/V. Obtained λ2eff was four order of magnitude larger compared with ZnO bulk material (2.5 pm/V).

Type de document :
Article dans une revue
Domaine :
Liste complète des métadonnées
Contributeur : Okina Univ Angers Connectez-vous pour contacter le contributeur
Soumis le : mercredi 15 septembre 2021 - 12:06:35
Dernière modification le : jeudi 9 décembre 2021 - 15:46:06



A. Chaieb, A. Chari, Bouchta Sahraoui. Optical properties of ZnO nanocrystals embedded in PMMA. Optical and Quantum Electronics, Springer Verlag, 2014, 46 (1), pp.39-46. ⟨10.1007/s11082-013-9693-1⟩. ⟨hal-03345029⟩



Consultations de la notice