Journal
APPLIED PHYSICS LETTERS
Volume 102, Issue 21, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4807894
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- Italian Minister of University and Research [FIRB RBFR08DJZI]
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We report on the unique emission features of light-emitting fibers made of a prototype conjugated polymer, namely, poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-(1,4-benzo-{2,1'-3}-thiadiazole)] (F8BT), realized by electrospinning with diameters in the range of 500-1000 nm. The fibers display emission polarized along their axis, evidencing a favoured alignment of the polymer molecules. Emission efficiency and time resolved measurements reveal an enhancement of both the quantum efficiency and the radiative rate (up to 22.5%) of the fibers compared to spin-coated films, shedding more light on their potential as miniaturized photon sources in optoelectronic devices requiring high recombination rates. (C) 2013 AIP Publishing LLC.
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