Mechanism of enhanced quantum efficiency in light-emitting diode based on a poly(p-phenylenevinylene) derivative

Jae Won Jang, Dong Keun Oh, Chang Hoon Lee, Cheol Eui Lee, Dong Won Lee, Jung Il Jin

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Transient electroluminescence (EL) measurements were made for a indium-tin-oxide (ITO)/ poly[(2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole)-p- phenylenevinylene] (PPPDPV)/ Al organic light-emitting diode (OLED), where PPPDPV is a derivative of poly(p-phenylenevinylene) (PPV) carrying the electron-transporting 2-(4-biphenyl)-5-(4-t-butylphenyl-1, 3,4-oxadiazole) moieties directly attached to the PPV backbone. As a result, we were able to explain the superior external quantum efficiency of a PPPDPV OLED device by a faster mobility as well as a longer EL lifetime in comparison to those for a PPV device.

Original languageEnglish
Pages (from-to)3183-3185
Number of pages3
JournalJournal of Applied Physics
Issue number6
Publication statusPublished - 2000 Mar 15


ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

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