Optical Properties and Amplified Spontaneous Emission of Novel MDMO-PPV/C500 Hybrid
AlSalhi, Rasha A. Abumosa , Bandar Ali Al-Asbahi and Mohamad Saleh . 2017
The influence of the solvent nature on optical properties of poly[2-methoxy-5-3,7-
dimethyloctyloxy-1,4-phenylenevinylene] (MDMO-PPV)/Coumarine 500 (C500) have been
investigated. In addition, the amplified spontaneous emission (ASE) from MDMO-PPV and efficient
energy transfer between the MDMO-PPV and C500 has been verified. The MDMO-PPV was dissolved
in aromatic and nonaromatic solvents, while the solution blending method was employed to prepare
the MDMO-PPV:C500 hybrid. The quantum yield of the MDMO-PPV was found to increase with the
reduction of a few factors such as polarity index of the solvent, absorption cross section (a), emission
cross section (e), and extinction coefficient ("max). The fluorescence spectra of the MDMO-PPV
appears from two vibronic band transitions (0-0, 0-1) and the ASE occurs at 0-1 transition, which was
verified by the ASE from MDMO-PPV. The MDMO-PPV in toluene exhibited the best ASE efficiency
due to its high quantum yield compared with other solvents. Strong overlap between the absorption
spectrum of MDMO-PPV and emission spectrum of C500 confirmed the efficient energy transfer
between them. Moreover, the ASE for energy transfer of the MDMO-PPV:C500 hybrid was proved.
The tuning of photophysical properties of the poly[2-methoxy-5-(3,7-dimethyl-octyloxy)-1,4-phenylenevinylene]—end capped with dimethylphenyl (DMP), MDMO-PPV–DMP, was achieved by incorporation of…
The effect of TiO2 nanoparticles (NPs) on the energy transfer mechanism from poly(9,9-dioctylfluorene-2,7-diyl) (PFO) to poly(2-methoxy-5(2-ethylhexyl)1,4-phenylenevinylene (MEH-PPV) and to poly 9…
Perovskite quantum dots (PQDs) have emerged as promising competitive materials for optoelectronics and future energy applications. In this work, high-quality PQD thin films