한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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A Stable and Efficient Host Material Having Tetraphenylsilane for Phosphorescent Organic Light Emitting Diodes

  • Park, Hyung-Dol (Department of Materials Science and Engineering and OLED Center, Seoul National University) ;
  • Kang, Jae-Wook (Department of Materials Science and Engineering and OLED Center, Seoul National University) ;
  • Lee, Deug-Sang (Organic Synthesis Group, Dongwoo Fine-Chem Co., LTD.) ;
  • Kim, Ji-Whan (Department of Materials Science and Engineering and OLED Center, Seoul National University) ;
  • Jeong, Won-Ik (Department of Materials Science and Engineering and OLED Center, Seoul National University) ;
  • Park, Young-Seo (Department of Materials Science and Engineering and OLED Center, Seoul National University) ;
  • Lee, Se-Hyung (Department of Materials Science and Engineering and OLED Center, Seoul National University) ;
  • Go, Kyung-Moon (Organic Synthesis Group, Dongwoo Fine-Chem Co., LTD.) ;
  • Lee, Jong-Soon (Organic Synthesis Group, Dongwoo Fine-Chem Co., LTD.) ;
  • Kim, Hyong-Jun (Department of Materials Science and Engineering and OLED Center, Seoul National University) ;
  • Kim, Jang-Joo (Department of Materials Science and Engineering and OLED Center, Seoul National University)
  • Published : 2008.10.13
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Abstract

A host material containing tetraphenylsilane, 9-(4-triphenylsilanyl-(1,1'4,1")-terphenyl-4"-yl)-9H-cabazole (TSTC), was synthesized for green phosphorescent organic emitting diodes. $Ir(ppy)_3$ based OLEDs using TSTC host and DTBT (2,4-diphenyl-6-(4'yl)-1,3,5-triazine) hole blocking layer (HBL) showed the maximum external quantum efficiency of 19.8 %, the power efficiency of 59.4 lm and high operational stability with a half lifetime of 160,000 h at an initial luminance of $100\;cd/m^2$.

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