Optoelectronic property enhancement of conjugated polymer in poly(9,9′-di-n-octylfluorenyl-2.7-diyl)/titania nanocomposites

Mohammad Hafizuddin Jumali, Bandar Ali Al-Asbahi, Chi Chin Yap, Muhamad Mat Salleh, Mohamad Saleh Alsalhi

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Optoelectronic property enhancement of poly(9,9′-di-n-octylfluorenyl- 2.7-diyl) (PFO) by different weight ratios of TiO2 nanoparticles (NPs) is demonstrated. The solution blending method was used to prepare the PFO/TiO2 nanocomposite. The microstructure of the composites was determined using X-ray diffraction while absorption and fluorescence spectra were recorded using UV-Vis and photoluminescence spectrophotometer respectively. X-ray diffractograms confirmed the formation of PFO/TiO2 nanocomposites. The absorbance and fluorescence spectra of the PFO/TiO 2 nanocomposite were proportionately enhanced with the content of TiO2 NPs. The recombination between electrons of TiO2 and holes of PFO, through the interface of PFO/TiO2 nanocomposites enhanced the luminescence properties. Besides, the energy gap, line width of phonon emission intensity and vibronic spacing decreased. The line width of the energy gap tails, the vibronic transition intensity and the S-factor increased resulting from higher aggregation of films as supported by field emission scanning electron microscope images. The observed turn on voltage of the indium tin oxide/(PFO/TiO2)/Al organic light emitting diode device displayed a decreasing trend, suggesting an improvement on the performance of the device as the TiO2 content was increased.

Original languageEnglish
Pages (from-to)257-262
Number of pages6
JournalThin Solid Films
Volume524
DOIs
Publication statusPublished - 1 Dec 2012

Fingerprint

Conjugated polymers
Optoelectronic devices
Nanocomposites
nanocomposites
titanium
Titanium
augmentation
polymers
Linewidth
Energy gap
Fluorescence
Nanoparticles
fluorescence
nanoparticles
Spectrophotometers
Organic light emitting diodes (OLED)
spectrophotometers
Electron transitions
Tin oxides
Field emission

Keywords

  • Nanocomposites
  • Optoelectronic properties
  • Organic light emitting diode
  • Poly(9,9′-di-n-octylfluorenyl-2.7-diyl)
  • Titanium dioxide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Optoelectronic property enhancement of conjugated polymer in poly(9,9′-di-n-octylfluorenyl-2.7-diyl)/titania nanocomposites. / Jumali, Mohammad Hafizuddin; Al-Asbahi, Bandar Ali; Yap, Chi Chin; Mat Salleh, Muhamad; Alsalhi, Mohamad Saleh.

In: Thin Solid Films, Vol. 524, 01.12.2012, p. 257-262.

Research output: Contribution to journalArticle

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