Title :
Study of nanocomposite ZnSe/PMMA
Author :
Sebais, M. ; Chaieb, A. ; Boudine, B. ; Ouili, Z. ; Halimi, S.
Author_Institution :
Phys. Dept., Mentouri Univ., Constantine, Algeria
Abstract :
The organic amorphous matrix of PMMA is transparent in the ultraviolet-visible area and so it allows the study of optical properties of ZnSe nanocrystals in this field. The thin films of PMMA/ZnSe nanocomposite were prepared using a colloidal solution and were deposited by spin coating technique on glass substrate. The investigation of samples by X-ray shows diffraction peaks of ZnSe semiconductor with cubic structure. The optical absorption spectra shows a large size distribution of the ZnSe crystallites and a shift of the band gap to the high energies compared to one of ZnSe bulk crystal. The photoluminescence spectra shows a wide emission band at 650 nm attributed to the radiative band to band transitions in the ZnSe nanocrystallites. These results confirm the dispersion of ZnSe nanocrystallites in the amorphous polymer PMMA and reveal some optical activity of the fabricated PMMA/ZnSe nanocomposite.
Keywords :
II-VI semiconductors; X-ray diffraction; crystallites; energy gap; nanocomposites; nanofabrication; optical rotation; organic-inorganic hybrid materials; photoluminescence; polymers; spin coating; ultraviolet spectra; visible spectra; wide band gap semiconductors; zinc compounds; PMMA-ZnSe nanocomposite; SiO2; X-ray diffraction; XRD; ZnSe; ZnSe bulk crystal; ZnSe nanocrystallite dispersion; ZnSe semiconductor; amorphous polymer; band gap shift; band transitions; colloidal solution; cubic structure; diffraction peaks; glass substrate; optical absorption spectra; optical activity; optical properties; organic amorphous matrix; photoluminescence spectra; radiative band; size distribution; spin coating technique; thin films; ultraviolet-visible area; wavelength 650 nm; wide emission band; Active matrix organic light emitting diodes; Optical device fabrication; Optical diffraction; Optical films; Photoluminescence; X-ray diffraction; Zinc compounds; Optoelectronics; PMMA; ZnSe nanocrystals; optical absorption; photoluminescence;
Conference_Titel :
Electronics, Communications and Photonics Conference (SIECPC), 2011 Saudi International
Conference_Location :
Riyadh
Print_ISBN :
978-1-4577-0068-2
Electronic_ISBN :
978-1-4577-0067-5
DOI :
10.1109/SIECPC.2011.5876957
