Properties of flexible phosphorescence polymer light emitting diodes coated on polyethylenenaphthalate plastic substrates

Seung Jun Baek, Su Choel Gong, Young Chul Chang, Hyung Ho Park, Hyeongtag Jeon, Ho Jung Chang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Flexible phosphorescence polymer light emitting diodes (PhPLEDs) with PEN/ITO/PEDOT:PSS/ PVK:Ir(ppy)3/TPBI/LiF/Al structure were fabricated to investigate the effects of Ir(ppy)3 doping concentrations on the optical and electrical properties of the devices. PVK and Ir(ppy)3 conjugated polymers as host and guest materials in the emission layer were spun coated at various concentrations of Ir(ppy)3 ranging from 2.0 to 8.0 vol%. As the concentration of Ir(ppy)3 increased from 2.0 to 6.0 vol%, the electrical and optical properties of the flexible PhPLEDs were improved clearly. Maximum luminance and current density were obtained for a PhPLED with an Ir(ppy)3 concentration of 6.0 vol%, with 6815 cd/m2 and 393 mA/cm2 at 9 V. The current efficiency tends to increase with the Ir(ppy)3 concentration, because of the formation of the excitons required to emit light.

Original languageEnglish
Pages (from-to)1585-1588
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume12
Issue number2
DOIs
Publication statusPublished - 2012 Jun 5

Fingerprint

Phosphorescence
phosphorescence
Plastics
Light emitting diodes
Polymers
light emitting diodes
plastics
Light
polymers
Electric properties
Substrates
Optical properties
Conjugated polymers
Excitons
electrical properties
Luminance
Current density
optical properties
Doping (additives)
luminance

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Baek, Seung Jun ; Gong, Su Choel ; Chang, Young Chul ; Park, Hyung Ho ; Jeon, Hyeongtag ; Chang, Ho Jung. / Properties of flexible phosphorescence polymer light emitting diodes coated on polyethylenenaphthalate plastic substrates. In: Journal of Nanoscience and Nanotechnology. 2012 ; Vol. 12, No. 2. pp. 1585-1588.
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Properties of flexible phosphorescence polymer light emitting diodes coated on polyethylenenaphthalate plastic substrates. / Baek, Seung Jun; Gong, Su Choel; Chang, Young Chul; Park, Hyung Ho; Jeon, Hyeongtag; Chang, Ho Jung.

In: Journal of Nanoscience and Nanotechnology, Vol. 12, No. 2, 05.06.2012, p. 1585-1588.

Research output: Contribution to journalArticle

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