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Phosphorescent Organic Light-Emitting Devices: Working Principle and Iridium Based Emitter Materials
NanoTecCenter Weiz Forschungsgesellschaft mbH, Franz-Pichler-Straße 32, 8160 Weiz, Austria
Institute for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 16, 8010 Graz, Austria
Institute of Solid State Physics, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria
* Authors to whom correspondence should be addressed.
Received: 11 July 2008; in revised form: 1 August 2008 / Accepted: 1 August 2008 / Published: 26 August 2008
Abstract: Even though organic light-emitting device (OLED) technology has evolved to a point where it is now an important competitor to liquid crystal displays (LCDs), further scientific efforts devoted to the design, engineering and fabrication of OLEDs are required for complete commercialization of this technology. Along these lines, the present work reviews the essentials of OLED technology putting special focus on the general working principle of single and multilayer OLEDs, fluorescent and phosphorescent emitter materials as well as transfer processes in host materials doped with phosphorescent dyes. Moreover, as a prototypical example of phosphorescent emitter materials, a brief discussion of homo- and heteroleptic iridium(III) complexes is enclosed concentrating on their synthesis, photophysical properties and approaches for realizing iridium based phosphorescent polymers.
Keywords: Organic light-emitting devices (OLEDs); electroluminescence; fluorescence; phosphorescence; phosphorescent polymers.
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Kappaun, S.; Slugovc, C.; List, E.J.W. Phosphorescent Organic Light-Emitting Devices: Working Principle and Iridium Based Emitter Materials. Int. J. Mol. Sci. 2008, 9, 1527-1547.
Kappaun S, Slugovc C, List EJW. Phosphorescent Organic Light-Emitting Devices: Working Principle and Iridium Based Emitter Materials. International Journal of Molecular Sciences. 2008; 9(8):1527-1547.
Kappaun, Stefan; Slugovc, Christian; List, Emil J.W. 2008. "Phosphorescent Organic Light-Emitting Devices: Working Principle and Iridium Based Emitter Materials." Int. J. Mol. Sci. 9, no. 8: 1527-1547.