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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 9 — May. 6, 2013
  • pp: 11086–11094

Flexible bottom-emitting white organic light-emitting diodes with semitransparent Ni/Ag/Ni anode

Ja-Ryong Koo, Seok Jae Lee, Ho Won Lee, Dong Hyung Lee, Hyung Jin Yang, Woo Young Kim, and Young Kwan Kim  »View Author Affiliations

Optics Express, Vol. 21, Issue 9, pp. 11086-11094 (2013)

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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)2acac: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.

© 2013 OSA

OCIS Codes
(160.4890) Materials : Organic materials
(230.3670) Optical devices : Light-emitting diodes

ToC Category:
Optical Devices

Original Manuscript: January 24, 2013
Revised Manuscript: April 5, 2013
Manuscript Accepted: April 22, 2013
Published: April 29, 2013

Ja-Ryong Koo, Seok Jae Lee, Ho Won Lee, Dong Hyung Lee, Hyung Jin Yang, Woo Young Kim, and Young Kwan Kim, "Flexible bottom-emitting white organic light-emitting diodes with semitransparent Ni/Ag/Ni anode," Opt. Express 21, 11086-11094 (2013)

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