Efficient charge transfer mechanism in polyfluorene/ZnO nanocomposite thin films

Bandar Ali Al-Asbahi, Mohammad Hafizuddin Jumali, Rashad Al-Gaashani

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The optical properties and charge transfer mechanism of poly (9,9′-di-n-octylfluorenyl-2.7-diyl) (PFO)/ZnO thin films have been investigated. The ZnO nanorods (NRs) were prepared via a microwave technique. The solution blending method was used to prepare the PFO/ZnO nanocomposites. X-ray diffraction (XRD) and field emission scanning electron microscope (FE-SEM) were used to determine the structural properties, while UV-Vis and photoluminescence (PL) were employed to investigate the optical properties of the films. XRD patterns confirmed that there was no variation in the structure of both PFO and ZnO NRs due to the blending process. FE-SEM micrographs displayed that ZnO NRs were well coated by PFO in all nanocomposite films. The absorption spectra of the nanocomposite thin films exhibited a red-shift indicating the increment in conjugation length of the PFO/ZnO nanocomposite. Significant quenching in the emission intensity of PFO was observed in fluorescence spectra of the nanocomposite films. This quenching was attributed to efficient charge transfer in the PFO/ZnO nanocomposites, which was further supported by the shorter PL lifetime of PFO/ZnO than that of the PFO thin film. The continuous decline in PL intensity of these nanocomposites is attributed to homogenous dynamic quenching between PFO and ZnO NRs.

Original languageEnglish
Article number608572
JournalJournal of Nanomaterials
Volume2014
DOIs
Publication statusPublished - 2014

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Nanocomposite films
Nanorods
Charge transfer
Nanocomposites
Quenching
Thin films
Photoluminescence
Field emission
Electron microscopes
Optical properties
Scanning
X ray diffraction
Diffraction patterns
Structural properties
Absorption spectra
Fluorescence
Microwaves

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Efficient charge transfer mechanism in polyfluorene/ZnO nanocomposite thin films. / Al-Asbahi, Bandar Ali; Jumali, Mohammad Hafizuddin; Al-Gaashani, Rashad.

In: Journal of Nanomaterials, Vol. 2014, 608572, 2014.

Research output: Contribution to journalArticle

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