한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
권호 표지

Electroluminescence characteristics of organic light-emitting diodes with TPD doped PVK as the hole transport layer

  • Shin, Y.C. (Department of Electrical Engineering and computer science , Seoul National University) ;
  • Song, J.H. (Department of physics, Inha university) ;
  • Lee, C.H. (Department of Electrical Engineering and computer science , Seoul National University)
  • Published : 2005.07.19
Download PDF
⟨ Previous Next ⟩

Abstract

We have fabricated organic light-emitting diodes using poly(N-vinylcarbazole)(PVK) doped with N,N'- diphenyl-N,N'-bis(3-methylphenyl)-[l,l'-biphenyl]- 4,4/-diamine (TPD) as the hole transport layer. TPD molecules act as the trapping sites in PVK and reduce the hole mobility, which can enhance the electronhole balance in the emitting layer, resulting in the enhanced device performance. We have found the optimum ratio of TPD to PVK for the EL efficiency.

Keywords