Special Section on Organic Light-Emitting Materials and Devices

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

[+] Author Affiliations
Jörg Frischeisen

University of Augsburg, Institute of Physics, Universitätsstraße 1, 86159 Augsburg, Germany

Bert J. Scholz

University of Augsburg, Institute of Physics, Universitätsstraße 1, 86159 Augsburg, Germany

Benedikt J. Arndt

University of Augsburg, Institute of Physics, Universitätsstraße 1, 86159 Augsburg, Germany

Tobias D. Schmidt

University of Augsburg, Institute of Physics, Universitätsstraße 1, 86159 Augsburg, Germany

Robert Gehlhaar

Kyushu University, Center for Future Chemistry, 744 Motooka, Nishi, Fukuoka 819-0395, Japan

Chihaya Adachi

Kyushu University, Center for Future Chemistry, 744 Motooka, Nishi, Fukuoka 819-0395, Japan

Kyushu University, Center for Organic Photonics and Electronics Research, 744 Motooka, Nishi, Fukuoka 819-0395, Japan

Wolfgang Brütting

University of Augsburg, Institute of Physics, Universitätsstraße 1, 86159 Augsburg, Germany

J. Photon. Energy. 1(1), 011004 (January 12, 2011). doi:10.1117/1.3523314
History: Received July 28, 2010; Revised October 01, 2010; Accepted October 04, 2010; Published January 12, 2011; Online January 12, 2011
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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.

© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Jörg Frischeisen ; Bert J. Scholz ; Benedikt J. Arndt ; Tobias D. Schmidt ; Robert Gehlhaar, et al.
"Strategies for light extraction from surface plasmons in organic light-emitting diodes", J. Photon. Energy. 1(1), 011004 (January 12, 2011). ; http://dx.doi.org/10.1117/1.3523314


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