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Journal of Nanomaterials
Volume 2012 (2012), Article ID 190290, 6 pages
http://dx.doi.org/10.1155/2012/190290
Research Article

Study of Nanostructured Polymeric Composites Used for Organic Light Emitting Diodes and Organic Solar Cells

1University of Engineering and Technology, Vietnam National University, 144 Xuan Thuy, Cau Giay, Hanoi 10000, Vietnam
2Department of Mechanical Engineering, The University of New Orleans, New Orleans, LA 70148, USA

Received 17 July 2012; Accepted 10 September 2012

Academic Editor: Marinella Striccoli

Copyright © 2012 Nguyen Nang Dinh 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

Polymeric nanocomposite films from PEDOT and MEH-PPV embedded with surface modified TiO2 nanoparticles for the hole transport layer and emission layer were prepared, respectively, for organic emitting diodes (OLEDs). The composite of MEH-PPV+nc-TiO2 was used for organic solar cells (OSCs). The characterization of these nanocomposites and devices showed that electrical (- characteristics) and spectroscopic (photoluminescent) properties of conjugate polymers were enhanced by the incorporation of nc-TiO2 in the polymers. The organic light emitting diodes made from the nanocomposite films would exhibit a larger photonic efficiency and a longer lasting life. For the organic solar cells made from MEH-PPV+nc-TiO2 composite, a fill factor reached a value of about 0.34. Under illumination by light with a power density of 50 mW/cm2, the photoelectrical conversion efficiency was about 0.15% corresponding to an open circuit voltage = 0.126 V and a shortcut circuit current density = 1.18 mA/cm2.