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Proceedings Paper

Enhanced coupling of light from OLED based on nanoporous substrates
Author(s): H.S. Kwok; H.J. Peng; Y. L. Ho; X.J. Yu
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Paper Abstract

We have demonstrated a new approach to enhance the light extraction efficiency for organic light emitting diode (OLED). Self-aligned, nanoporous alumina film was used as a quasi-2D photonic crystal to modify the optical wave propagation and coupling of light from the OLED. Waveguiding modes are turned into leaky modes. The experimental results showed an increase of over 50% in the coupling efficiency of the nanoporous device, without affecting the electrical properties of the OLED. We used the effective medium theory to model the optical properties of the nanoporous media and simulated the optical characteristics of the devices.

Paper Details

Date Published: 16 February 2004
PDF: 8 pages
Proc. SPIE 5214, Organic Light-Emitting Materials and Devices VII, (16 February 2004); doi: 10.1117/12.505155
Show Author Affiliations
H.S. Kwok, Hong Kong Univ. of Science and Technology (Hong Kong)
H.J. Peng, Hong Kong Univ. of Science and Technology (Hong Kong)
Y. L. Ho, Hong Kong Univ. of Science and Technology (Hong Kong)
X.J. Yu, Hong Kong Univ. of Science and Technology (Hong Kong)


Published in SPIE Proceedings Vol. 5214:
Organic Light-Emitting Materials and Devices VII
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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