Enhanced coupling of light from OLED based on nanoporous substrates

H.S. Kwok; H.J. Peng; Y. L. Ho; X.J. Yu

doi:10.1117/12.505155

16 February 2004 Enhanced coupling of light from OLED based on nanoporous substrates

H.S. Kwok, H.J. Peng, Y. L. Ho, X.J. Yu

Proceedings Volume 5214, Organic Light-Emitting Materials and Devices VII; (2004) https://doi.org/10.1117/12.505155
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

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.

Citation Download Citation

H.S. Kwok, H.J. Peng, Y. L. Ho, and X.J. Yu "Enhanced coupling of light from OLED based on nanoporous substrates", Proc. SPIE 5214, Organic Light-Emitting Materials and Devices VII, (16 February 2004); https://doi.org/10.1117/12.505155

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