36.5: Late-News Paper: The Light Distribution in OLEDs and Ways to Increase the Light Outcoupling Efficiency

36.5: Late-News Paper: The Light Distribution in OLEDs and Ways to Increase the Light Outcoupling Efficiency

Power efficiency of organic light emitting devices (OLEDs) is in the focus of worldwide research in order to reduce power consumption of displays and to improve the competitive situation of OLEDs for lighting devices. The optical properties of OLEDs are studied with the aim to enhance the fraction o...

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Veröffentlicht in:SID International Symposium Digest of technical papers 2008-05, Vol.39 (1), p.522-525
Hauptverfasser: Werner, Ansgar, Rothe, Carsten, Denker, Ulrich, Pavicic, Domagoj, Hofmann, Michael, Mladenovski, Saso, Neyts, Kristiaan
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container_issue 1
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container_title SID International Symposium Digest of technical papers
container_volume 39
creator Werner, Ansgar
Rothe, Carsten
Denker, Ulrich
Pavicic, Domagoj
Hofmann, Michael
Mladenovski, Saso
Neyts, Kristiaan
description Power efficiency of organic light emitting devices (OLEDs) is in the focus of worldwide research in order to reduce power consumption of displays and to improve the competitive situation of OLEDs for lighting devices. The optical properties of OLEDs are studied with the aim to enhance the fraction of light coupled out of these devices. Simulation software has been used to analyze the transfer of internally generated emission into usable external light modes. Results from modeling have been compared to experimental data to build trust into the validity of the results. Critical parameters influencing outcoupling properties have been identified. Thus, 185lm/W at 1000cd/m2 have been achieved for a green PIN‐OLED using a high‐n substrate & half ball lens. Finally, some conclusions for the design of outcoupling enhancing means are drawn.
doi_str_mv 10.1889/1.3069717
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title 36.5: Late-News Paper: The Light Distribution in OLEDs and Ways to Increase the Light Outcoupling Efficiency
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