Strategies for light extraction from surface plasmons in organic light-emitting diodes

Jörg Frischeisen; Bert Scholz; Benedikt Arndt; Tobias Schmidt; Robert Gehlhaar; Chihaya Adachi; Wolfgang Brütting

doi:10.1117/1.3523314

1 January 2011 Strategies for light extraction from surface plasmons in organic light-emitting diodes

Jörg Frischeisen, Bert Scholz, Benedikt Arndt, Tobias Schmidt, Robert Gehlhaar, Chihaya Adachi, Wolfgang Brütting

Author Affiliations +

Journal of Photonics for Energy, Vol. 1, Issue 1, 011004 (January 2011). https://doi.org/10.1117/1.3523314

Abstract

Organic light-emitting diodes (OLEDs) usually exhibit a low light-outcoupling efficiency of only 20%. Typically, more than 30% of the available power is lost to surface plasmons (SPs). Consequently, the overall efficiency could be strongly enhanced by recovering SP losses. Therefore, three suitable techniques for extracting SPs-index coupling, prism coupling, and grating coupling-are discussed from a theoretical point of view and investigated experimentally in simplified OLED-like structures. The basic physical processes are clarified by systematic variations of the involved layer thicknesses and by excited state lifetime measurements. In addition, the analysis of the results is supported by optical simulations based on a dipole model. Finally, the advantages and disadvantages of each method, their potential efficiency for recovering SP losses, as well as the applicability in OLEDs are compared.

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Jörg Frischeisen, Bert Scholz, Benedikt Arndt, Tobias Schmidt, Robert Gehlhaar, Chihaya Adachi, and Wolfgang Brütting "Strategies for light extraction from surface plasmons in organic light-emitting diodes," Journal of Photonics for Energy 1(1), 011004 (1 January 2011). https://doi.org/10.1117/1.3523314

Published: 1 January 2011

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