Thia- and selena-diazole containing polymers for near-infrared light-emitting diodes
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2015
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Tregnago, G.
Steckler, T.T.
Fenwick, O.
Andersson, M.R.
Cacialli, F.
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Journal of Materials Chemistry C, 2015; 3(12):2792-2797
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We report the optical characterization of near-infrared (NIR) emitters for polymer light-emitting diode (PLEDs) applications based on the copolymerization of a phthalimide-thiophene host polymer with a low-gap emitter containing the bisthienyl(benzotriazolothiadiazole) unit. We investigate different loadings of the low-gap emitter (in the range 1-3% by weight) and the substitution of a sulphur atom with a selenium atom to further extend the emission in the NIR up to 1000 nm. PLEDs based on copolymers with 1% loading give the best efficiency (0.09%) and show an almost pure NIR EL (95% in the NIR) peaking at 895 nm.
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Copyright 2015 Royal Society of Chemistry (https://creativecommons.org/licenses/by/3.0/au/deed.en)
Access Condition Notes: This article is licensed under a Creative Commons Attribution 3.0 Unported Licence