Enhanced optoelectronic properties of PFO/Fluorol 7GA hybrid light emitting diodes via additions of TiO2 nanoparticles

Bandar Ali Al-Asbahi, Mohammad Hafizuddin Jumali, Mohamad Saleh AlSalhi

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The effect of TiO2 nanoparticle (NP) content on the improvement of poly(9,9'-di-noctylfluorenyl- 2,7-diyl) (PFO)/Fluorol 7GA organic light emitting diode (OLED) performance is demonstrated here. The PFO/Fluorol 7GA blend with specific ratios of TiO2 NPs was prepared via a solution blending method before being spin-coated onto an indium tin oxide (ITO) substrate to act as an emissive layer in OLEDs. A thin aluminum layer as top electrode was deposited onto the emissive layer using the electron beam chamber. Improvement electron injection from the cathode was achieved upon incorporation of TiO2 NPs into the PFO/Fluorol 7GA blend, thus producing devices with intense luminance and lower turn-on voltage. The ITO/(PFO/Fluorol 7GA/TiO2)/Al OLED device exhibited maximum electroluminescence intensity and luminance at 25 wt % of TiO2 NPs, while maximum luminance efficiency was achieved with 15 wt % TiO2 NP content. In addition, this work proved that the performance of the devices was strongly affected by the surface morphology, which in turn depended on the TiO2 NP content.

Original languageEnglish
Article number334
JournalPolymers
Volume8
Issue number9
DOIs
Publication statusPublished - 6 Sep 2016

Fingerprint

Organic light emitting diodes (OLED)
Optoelectronic devices
Light emitting diodes
Luminance
Nanoparticles
Tin oxides
Indium
Electron injection
Electroluminescence
Surface morphology
Electron beams
Cathodes
Aluminum
Electrodes
Electric potential
Substrates
2-butyl-6-(butylamino)-1H-benzo(de)isoquinoline-1,3(2H)-dione
indium tin oxide

Keywords

  • Electroluminescence
  • Luminance efficiency
  • Organic light emitting diode (OLED)
  • Poly(9,9'-di-n-octylfluorenyl-2,7-diyl) (PFO)/Fluorol 7GA blend
  • Turn-on voltage

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics

Cite this

Enhanced optoelectronic properties of PFO/Fluorol 7GA hybrid light emitting diodes via additions of TiO2 nanoparticles. / Al-Asbahi, Bandar Ali; Jumali, Mohammad Hafizuddin; AlSalhi, Mohamad Saleh.

In: Polymers, Vol. 8, No. 9, 334, 06.09.2016.

Research output: Contribution to journalArticle

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