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Journal of Nanomaterials
Volume 2012, Article ID 319398, 7 pages
http://dx.doi.org/10.1155/2012/319398
Research Article

Optical Properties of Polystyrene-ZnO Nanocomposite Scattering Layer to Improve Light Extraction in Organic Light-Emitting Diode

Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici Research Centre, Piazzale E. Fermi 1, 80055 Portici, Italy

Received 10 March 2012; Accepted 11 May 2012

Academic Editor: Marcio Rodrigo Loos

Copyright © 2012 G. Nenna et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this work, experimental measurements on polystyrene-ZnO nanocomposite scattering films and on organic light-emitting device with and without the scattering layers are presented. The results are also compared with Henyey-Greenstein radiative-transfer model to narrow down the parameters that can be important in the identification of more suitable scattering layers. As a result, an increase of efficiency of about 30% has been obtained that it can be translated in 60% of outcoupled light in respect to the total generated amount.