"

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 of poly (N vinylcarbazole)/carbon nanotubes composites

I. I. GONTIA1,* , M. BAIBARAC1

Affiliation

  1. National Institute of Materials Physics, Laboratory of Optics and Spectroscopy, P.O. Box MG-7, R-76900 Bucharest, Romania

Abstract

The photoluminescence (PL) of two types of poly (N-vinyl-carbazole)(PVK)/carbon nanotubes (CN) composites, prepared by chemical and electrochemical method, has been investigated. In comparison with the pure PVK, the chemically prepared PVK/NC sample shows a significant PL quenching and a shorter decay time. For the samples prepared electrochemically, PL increases in intensity, red shifts and gets longer decay time with the increase of voltammetric cycles number. In addition, the latter shows a change in emission from high-energy excimer to low-energy excimer after a treatment with NH4OH..

Keywords

Photoluminescence, Poly (N-vinyl-carbazole)/carbon nanotubes composite, Decay time.

Submitted at: March 15, 2011
Accepted at: May 25, 2011

Citation

I. I. GONTIA, M. BAIBARAC, Photoluminescence of poly (N vinylcarbazole)/carbon nanotubes composites, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 5, pp. 579-582 (2011)