• 제목/요약/키워드: Electron-withdawing groups

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Phosphorescent Iridium(III) Complexes based on the ppy Ligands Containing Electron-withdrawing Carbonyl Groups

  • Lee, Kum-Hee;Park, Jeong-Keun;You, Jae-Nam;Seo, Ji-Hyun;Kim, Young-Kwan;Yoon, Seung-Soo
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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    • pp.762-766
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    • 2009
  • We have synthesized and demonstrated a red emission in Organic Light Emitting Diodes (OLEDs) using phosphorescent iridium(III) complexes based on the 2-phenylpyridine ligands with electron-withdrawing carbonyl groups. Among those, a device exhibited highly efficient red-orange emission with the luminance of 20460 cd/$m^2$ at 12 V, the luminous efficiency of 22.0 cd/A at 20 mA/$cm^2$, and the $CIE_{x,y}$ coordinates of (x=0.560, y=0.439 ) at 10 V.

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