한국정보디스플레이학회:학술대회논문집

한국정보디스플레이학회 (The Korean Infomation Display Society)
권호 표지

Improvement of PLED Efficiency by Post-annealing Process

  • Seo, Jun-Seon (Dept. of Sensor and Display Engineering, Kyungpook National University) ;
  • Kim, Jae-Hyun (Dept. of Sensor and Display Engineering, Kyungpook National University) ;
  • Hong, Seok-Min (Dept. of Sensor and Display Engineering, Kyungpook National University) ;
  • Kang, Byoung-Ho (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Kim, Do-Eok (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Kim, Hak-Rin (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Kang, Shin-Won (School of Electrical Engineering and Computer Science, Kyungpook National University)
  • 발행 : 2009.10.12
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초록

In this study, we manufactured polymer-LED using light emitting copolymer as the active layer. After cathode layer deposition, we did post-annealing at $150^{\circ}C$ during 10 min in $N_2$ glove box. Then, we confirmed that the efficiency of the device was significantly enhanced by post annealing process. Its value was increased from 0.18(cd/A) to 1.32(cd/A), approximately 7 times. This phenomenon is a result of improved stability between polymer and metal cathode for injection of electrons as the contact density increases.

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