Flexible bottom-emitting white organic light-emitting diodes with semitransparent Ni/Ag/Ni anode Academic Article uri icon

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abstract

  • We fabricated a flexible bottom-emitting white organic light-emitting diode (BEWOLED) with a structure of PET/Ni/Ag/Ni (3/6/3 nm)/ NPB (50 nm)/mCP (10 nm)/7% FIrpic:mCP (10 nm)/3% Ir(pq)(2) acac:TPBi (5 nm)/7% FIrpic:TPBi (5 nm)/TPBi (10 nm)/Liq (2 nm)/ Al (100 nm). To improve the performance of the BEWOLED, a multilayered metal stack anode of Ni/Ag/Ni treated with oxygen plasma for 60 sec was introduced into the OLED devices. The Ni/Ag/Ni anode effectively enhanced the probability of hole-electron recombination due to an efficient hole injection into and charge balance in an emitting layer. By comparing with a reference WOLED using ITO on glass, it is verified that the flexible BEWOLED showed a similar or better electroluminescence (EL) performance.

authors

  • Koo, Ja-Ryong
  • Lee, Seok Jae
  • Lee, Ho Won
  • Lee, Dong Hyung
  • Yang, Hyung Jin
  • Kim, Woo Young
  • Kim, Young Kwan

publication date

  • May 6, 2013