한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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Host effects on electrical conductivity of $ReO_3$ doped organic semiconductors

  • Lee, Jae-Hyun (Dept. of Materials Science and Engineering, and Center for OLED Seoul Nat'l Univ.) ;
  • Leem, Dong-Seok (Dept. of Chemistry, Imperial College-London, South Kensington Campus) ;
  • Kim, Jang-Joo (Dept. of Materials Science and Engineering, and Center for OLED Seoul Nat'l Univ.)
  • Published : 2009.10.12
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Abstract

We investigated the doping effects of $ReO_3$ in different p-type organic semiconductors on the formation of charge transfer complexes and the electrical conductivity by comparing the absorption in ultraviolet-visible-nearinfrared (UV-Vis-NIR) and the current density-voltage characteristics of the hole only devices, respectively. The large energy difference between the HOMO level of host and Fermi energy level of dopant (${\Delta}E$=$E_{HOHO,host}$ - $E_{F,dopant}$) gives higher concentration of CT complexes and enhanced conductivity.

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