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DOI Prefix 10.20431 |
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Desirable Amplified Spontaneous Emission(Ase) from a Conjugated Polymer Poly (9,9-Dioctylfluorenyl-2,7-Diyl) End Capped with 2,5-Diphenyl-1,2,4-Oxadiazole(Pfo) in Liquid and Solid State
Mahgoub Elshaikh1, Ali A. S. Marouf2*, K. H. Ibnaouf3
2. Institute of Laser, Sudan University of Science and Technology, Khartoum Sudan.
3.Physics Department, College of Science, Al Imam Mohammad Ibn Saud Islamic University (IMSIU), P.O. Box 90950, Riyadh 11623, Saudi Arabia.
Citation : Mahgoub Elshaikh, Ali A. S. Marouf, K. H. Ibnaouf, Desirable Amplified Spontaneous Emission(Ase) from a Conjugated Polymer Poly (9,9-Dioctylfluorenyl-2,7-Diyl) End Capped with 2,5- Diphenyl-1,2,4-Oxadiazole(Pfo) in Liquid and Solid State International Journal of Advanced Research in Physical Science 2019, 6(8) : 07-15.
Thin films of a conducting polymer, poly (9,9-di-n-octylfluorenyl-2,7-diyl) (PFO) were prepared. PFO was dissolved in tetrahydrofuran (THF) with different concentrations to achieve thin films with different thicknesses. The solution was deposited by spin coating technique on glass substrates. The absorption spectrum has shown two distinguished peaks. The spectral and amplified spontaneous emission (ASE) properties of PFO thin films were recorded. The photoluminescence (PL) spectra at 0.0025mg/ml showed two clear peaks and a hump. These peaks could be attributed to PFO molecule, dimer, and excimer, respectively. Under suitable pump power excitation of Nd: YAG laser (355 nm) the amplified spontaneous emission spectrum was obtained at 462 nm. To the best of our knowledge, this perhaps is the first report on conjugated polymer PFO in solid state thin film producing ASE from the excimer state.