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Conjugated Polymers-Based Ternary Hybrid toward Unique Photophysical Properties
Authors:Bandar Ali Al-Asbahi  Mohamad S. AlSalhi  Mohammad Hafizuddin Hj. Jumali  Amanullah Fatehmulla  Saif M. H. Qaid  Wafa Musa Mujamammi  Hamid M. Ghaithan
Affiliation:1.Department of Physics & Astronomy, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia;2.Department of Physics, Faculty of Science, Sana’a University, Sana’a 12544, Yemen;3.School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia;4.Department of Physics, Faculty of Science, Ibb University, Ibb 70270, Yemen
Abstract:The improvement of optical and optoelectronic properties of the individual poly [2-methoxy-5- (2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV), poly[2-methoxy-5-(3,7-dimethyl-octyloxy)-1,4-phenylenevinylene]–End capped with Dimethyl phenyl (OC1C10–PPV–DMP), and poly (9,9′-di- n -octylfluorenyl-2,7-diyl) (F8) was revealed by blending them in ternary hybrid with optimal ratio (F8/2 wt.% MEH-PPV/2 wt.% OC1C10–PPV–DMP). All individual and optimal ternary solutions were prepared via the solution-blending method followed by depositing them onto glass and ITO substrates using spin-coating technique. The semi-crystalline phase of the ternary hybrid and the strong mixing between the conjugated polymers were evidenced by observing the X-ray diffraction patterns that related to F8 into the hybrid diffractogram. The optical and optoelectronic properties of all prepared thin films were investigated in terms of absorption and emission spectra, Commission International d′Eclairage (CIE) coordinates, and current–voltage (I-V) characterizations. Emission peaks at the entire range of visible spectrum can be revealed from the ternary hybrid of the three individual conjugated polymers, producing white emission as evidenced from the emission spectrum and CIE coordinates of the hybrid. Among all fabricated organic light-emitting diodes (OLEDs) devices, the ternary hybrid-based-OLED revealed the best performance in terms of current and turn-on voltage.
Keywords:F8   MEH-PPV   OC1C10-PPV-DMP   optical and optoelectronic properties   OLED
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