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Issue 12, 2015
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Thia- and selena-diazole containing polymers for near-infrared light-emitting diodes

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Abstract

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.

Graphical abstract: Thia- and selena-diazole containing polymers for near-infrared light-emitting diodes

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Publication details

The article was received on 13 Jan 2015, accepted on 04 Feb 2015 and first published on 17 Feb 2015


Article type: Communication
DOI: 10.1039/C5TC00118H
Citation: J. Mater. Chem. C, 2015,3, 2792-2797
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    Thia- and selena-diazole containing polymers for near-infrared light-emitting diodes

    G. Tregnago, T. T. Steckler, O. Fenwick, M. R. Andersson and F. Cacialli, J. Mater. Chem. C, 2015, 3, 2792
    DOI: 10.1039/C5TC00118H

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