"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Photoluminescence properties of composites based on zinc oxyde and single-walled carbon nanotubes

M. BAIBARAC1,* , I. BALTOG1, M. HUSANU1, T. VELULA1, C. BUCUR1, L. MIHUT1, N. PREDA1

Affiliation

  1. National Institute of Materials Physics, Lab. of Optics and Spectroscopy, P. O. Box MG-7, RO-77125, Bucharest, Romania

Abstract

Photoluminescence (PL) properties of the composites based on zinc oxide (ZnO) and single-walled carbon nanotubes (SWNTs) prepared by hydrothermal synthesis are studied in this paper. The emission and excitation spectra of nanometric ZnO powder are dramatically influenced by the adsorption of different molecules coming from the environment. Therefore, a special attention is given to reveal the influences of adsorption/de-sorption process on photoluminescence properties of zinc oxide nanoparticles. A quenching effect of the intrinsic PL is observed regularly when the ZnO is synthesized in the presence of SWNTs, i.e. when a ZnO/SWNTs composite is formed. A distinct feature of the ZnO/SWNTs composite, is an emission band with a maximum at 405-450 nm..

Keywords

Photoluminescence, Properties and materials, Composite materials, Nanocrystalline materials, Nanotubes.

Submitted at: Sept. 25, 2007
Accepted at: Feb. 18, 2008

Citation

M. BAIBARAC, I. BALTOG, M. HUSANU, T. VELULA, C. BUCUR, L. MIHUT, N. PREDA, Photoluminescence properties of composites based on zinc oxyde and single-walled carbon nanotubes, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 2, pp. 288-293 (2008)