1. Composition dependence of photoluminescence properties of poly(9,9-di-n-hexylfluorenyl-2,7-diyl) with perovskite-structured SrTiO3 nanocomposites.
- Author
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Din, U.K.N., Salleh, M.M., Aziz, T.H.T., and Umar, A.A.
- Subjects
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PHOTOLUMINESCENCE , *STRONTIUM titanate films , *OPTICAL properties of nanocomposite materials , *PEROVSKITE , *SPIN coating , *MOLECULAR orbitals - Abstract
Nanocomposite thin films of poly(9,9-di- n -hexylfluorenyl-2,7-diyl) (PHF) with 10–50 wt% perovskite-structured SrTiO 3 nanoparticles (designated as PHF:SrTiO 3 ) were prepared by spin coating. The photoluminescence (PL) properties of the nanocomposites thin films were studied. The incorporation of SrTiO 3 nanoparticles into the nanocomposite thin films enhanced the original PL intensities of the host PHF thin films. The intensities of the PL peak for the nanocomposite thin films were dependent on the amount of SrTiO 3 nanoparticles in the films and the homogeneity of the nanoparticle distribution. The distribution of the SrTiO 3 nanoparticles contributed to the overlapping molecular orbital sites in PHF:SrTiO 3 , which promoted the excited electrons from the conduction band of SrTiO 3 transferred to the excited energy level of the PHF host material. In this case, the perovskite-structured SrTiO 3 nanoparticles act as sensitizers. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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