期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 3, 期 12, 页码 2792-2797出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5tc00118h
关键词
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资金
- EC Seventh Framework Programme (FP7) [264694, 607585]
- EU Horizon Research and Innovation Programme [643238]
- Royal Society
- EPSRC
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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