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Deep-Blue Phosphorescent Emitters with Phosphoryl Groups for Organic Light-Emitting Diodes by Solution Processes |
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| Authors: | Hui-Jun Yun Kwon-Hyeon Kim So-hee Kang Jang-Joo Kim Yun-Hi Kim |
| Affiliation: | 1. School of Materials Science and Engineering & Engineering Research Institute (ERI), Gyeongsang National University, Jinju, 660-701 (South Korea)
These authors contributed equally to this work.;2. WCU Hybrid Materials Program, Department of Materials Science and Engineering and the Center for Organic Light Emitting Diode, Seoul (South Korea) These authors contributed equally to this work.;3. Department of Chemistry and Engineering Research Institute (ERI), Gyeongsang National University, Jinju, 660-701 (South Korea);4. WCU Hybrid Materials Program, Department of Materials Science and Engineering and the Center for Organic Light Emitting Diode, Seoul (South Korea) Jang-Joo Kim, WCU Hybrid Materials Program, Department of Materials Science and Engineering and the Center for Organic Light Emitting Diode, Seoul (South Korea) Yun-Hi Kim, Department of Chemistry and Engineering Research Institute (ERI), Gyeongsang National University, Jinju, 660-701 (South Korea) |
| Abstract: | The new deep-blue iridium complex, Ir(dppfm)2pic, consisting of a phosphoryl group at the 3′-position of the phenyl ring and a methyl group at the 4-position of pyridine, was synthesized and characterized for applications in organic light-emitting diodes (OLEDs). Ir(dppfm)2pic exhibited an emission peak of 455 nm and high photoluminescence quantum yields of 73 %. Phosphorescent OLEDs based on Ir(dppfm)2pic exhibited a maximum external quantum efficiency of 7.8 % and Commission Internationale de l’Eclairage (CIE) coordinates of (0.15, 0.22). |
| Keywords: | electrochemistry iridium luminescence organic light-emitting diodes photochemistry |