한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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Exciton dissociation yields of semiconducting polymer thin film devices doped by various phosphorescent emitters

  • An, J.D. (Dept. of Chemistry & Research Center for Organic Displays, Optoelectronic Materials Research Center, KIST) ;
  • Chang, J.Y. (Dept. of Chemistry & Research Center for Organic Displays) ;
  • Han, J.W. (Dept. of Chemistry & Research Center for Organic Displays) ;
  • Im, C. (Dept. of Chemistry & Research Center for Organic Displays) ;
  • Chin, B.D. (Optoelectronic Materials Research Center, KIST)
  • Published : 2006.08.22
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Abstract

To understand the exact charge carrier photogeneration properties of photoactive thin films consisting of a ${\pi}-conjugated$ polymer matrix and a triplet dopant, we prepared two types of polymer, poly(9-vinylcarbazole) (PVK) and poly[9,9-bis(2- ethylhexyl)fluorene-2,7-diyl] (PF2/6) doped with triplet emitters for organic light-emitting diodes (OLED), either iridium(III)fac-tris(2-phenylpyridine) $(Ir(ppy)_3)$ or iridium(III)bis[(4,6-fluorophenyl)- $pyridinato-N,C^2'$]picolinate (FIrpic), as thin film devices by using the conventional method. Those doped film devices, as well as pristine film devices, on ITO substrates were characterized by means of steady state photocurrent measurement for a wide spectral range.

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