한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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Development of Highly Efficient and Stable Blue Organic Electroluminescent Devices

  • Lee, Meng Ting (Dept. of Applied Chemistry, National of Chiao Tung University) ;
  • Chen, Hsia Hung (Dept. of Applied Chemistry, National of Chiao Tung University) ;
  • Tsai, Chih Hung (Dept. of Applied Chemistry, National of Chiao Tung University) ;
  • Liao, Chi Hung (Dept. of Applied Chemistry, National of Chiao Tung University) ;
  • Chen, Chin H. (Dept. of Photonics & Display Institute, National of Chiao Tung University)
  • Published : 2004.08.23
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Abstract

We have developed a highly efficient and stable blue organic electroluminescent device (OLED) based on the blue fluorescent p-bis(p-N,N-diphenyl-aminostyryl)benzene (DSA-Ph) dopant in a morphologically stable high-bandgap host material, 2-methyl-9,10-di(2-naphthyl)anthracene (MADN), which achieved an EL efficiency of 9.7 cd/A and 5.5 lm/W at 20 mA/$cm^2$ and 5.7 V with a Commission Internationale d'Eclairage coordinates of(x = 0.16, y = 0.32). This sky blue device which could also alleviate the problematic current induced quenching at high current achieved a half-decay lifetime ($t_{1\;2}$) of 46,000 h at an initial brightness of 100 cd/$m^2$.

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