Photophysical and energy transfer mechanism studies of PFO/F7GA/MEH-PPV ternary organic blend films
PhotophysicalandenergytransfermechanismofthePoly(9,9-di-n-octylflourenyl-2,7-diyl)(PFO)/Fluorol7GA (F7GA)/Poly [2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) blend thin films were investigatedforpotentialapplicationsaswhiteorganiclightemittingdiodes.ThePFOandF7GAcontentsinthe blendswerefixedat15mg/mland0.5wt%respectivelywhileMEH-PPVcontentswerevariedfrom0%to1.0wt %.Theblendswerestirredandsubsequentlydepositedontoindiumtinoxidecoatedglasssubstratetoformfilms usingspincoatingtechnique.Duetodipole-dipoleinteractionandelectron-holemigrationprocesses,additions up to0.3wt%MEH-PPV resultedinintensifiedemissionof thePFO andF7GA.However, furtheradditionsof MEH-PPV produced reversal trend resulted from stronger dipoles interaction, inhibition in excitation of PFO moleculesaswellasrestrictedelectrons-holesmigrations.Despitehighercontents,MEH-PPVexhibitedalmost constantemissions,anindicationofenergylostthroughheatdissipation.
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