Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Electrical Conduction Properties of OLED Device with Varying Temperature

온도 변화에 따른 OLED 소자의 전기전도 특성

  • 이호식 (동신대학교 병원의료공학과) ;
  • 김귀열 (울산대학교 전기전자정보시스템공학부) ;
  • 박용필 (동신대학교 병원의료공학과)
  • Published : 2007.12.31
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Abstract

Temperature-dependent current-voltage characteristics of Organic Light-Emitting Diodes(OLEDs) were studied. The OLEDs were based on the molecular compounds, N,N'-diphenyl-N,N'-bis(3- methylrhenyi)-1,1'-diphenyl-4,4'-diamine (TPD) as a hole transport and tris(8-hydroxyquinoline) aluminum(Alq3) as an electron transport and emissive material. The current-voltage characteristics were measured in the temperature range of 10[K] and 300[K]. A conduction mechanism in OLEDs was interpreted in terms of tunneling and trap-filled limited current.

OLED 소자의 전기적 특성을 온도 변화에 따라 측정을 하였다. OLED 소자는 N,N'-diphenyl-N,N'-bis(3-methylphenyl)-1,1'-diphenyl-4,4'-diamine (TPD)를 정공 수송층으로, tris(8-hydroxyquinoline) aluminum(Alq3)를 전자송층 및 발광층으로 사용하였다. 전압-전류 특성은 온도 범위 $10K{\sim}300K$에서 측정하였다. OLED 소자에서의 전도 메커니즘의 해석은 Fowler-Nordheim tunneling 법을 이용하여 해석하였다.

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References

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