Table of Contents
Journal of Nanoscience
Volume 2014, Article ID 258937, 4 pages
Research Article

Study of the Light Coupling Efficiency of OLEDs Using a Nanostructured Glass Substrate

1Laboratoire de Physique des Lasers, UMR CNRS 7538, Université Paris 13, Sorbonne Paris Cité, Villetaneuse, France
2Department of Optics and Photonics, National Central University, Taiwan

Received 30 November 2013; Revised 20 February 2014; Accepted 21 February 2014; Published 24 March 2014

Academic Editor: Vincent Jousseaume

Copyright © 2014 Min Won Lee 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.


We study theoretically the enhancement of the light extraction from an OLED (Organic Light-Emitting Diode) with nanoair-bubbles embedded inside a glass substrate. Due to such a nanostructure inside the substrate, the critical angle which limits the light extraction outside the substrate from the OLED is increased. The theoretical results show that the nanoair bubbles near by the substrate surface can improve the efficiency of the light extraction by 7%. Such a substrate may also be suitable for photovoltaic cells or display screens.