Influence of cavity effects on light extraction efficiency in organic light emitting devices

Jaewon Lee; Neetu Chopra; Kaushik Roy Choudhury; Franky So

doi:10.1117/12.732556

12 November 2007 Influence of cavity effects on light extraction efficiency in organic light emitting devices

Jaewon Lee, Neetu Chopra, Kaushik Roy Choudhury, Franky So

Proceedings Volume 6655, Organic Light Emitting Materials and Devices XI; 66551J (2007) https://doi.org/10.1117/12.732556
Event: Photonic Devices + Applications, 2007, San Diego, California, United States

Abstract

In this paper, we demonstrate that the light extraction efficiency of an OLED is a strong function of the location of the recombination zone and the ratio of the extracted mode to the substrate guided mode varies from 22% to 55%. The large variation of the extraction efficiency in most OLEDs is the direct result of optical cavity effect present in the devices. In addition, we show that the light intensity profile varies from a Lambertian shape to a non-Lambertian shape depending of the device geometry.

Citation Download Citation

Jaewon Lee, Neetu Chopra, Kaushik Roy Choudhury, and Franky So "Influence of cavity effects on light extraction efficiency in organic light emitting devices", Proc. SPIE 6655, Organic Light Emitting Materials and Devices XI, 66551J (12 November 2007); https://doi.org/10.1117/12.732556

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