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Intense and Stable ...
Intense and Stable Near-Infrared Emission from Light-Emitting Electrochemical Cells Comprising a Metal-Free Indacenodithieno[3,2-b]thiophene-Based Copolymer as the Single Emitter
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- Tang, Shi (författare)
- Umeå universitet,Institutionen för fysik,LunaLEC AB, Tvistevagen 47, SE-90719 Umea, Sweden
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- Murto, Petri Henrik, 1984 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Xu, Xiaofeng, 1984 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Larsen, Christian (författare)
- Umeå universitet,Institutionen för fysik,LunaLEC AB, Tvistevagen 47, SE-90719 Umea, Sweden
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- Wang, Ergang, 1981 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Edman, Ludvig (författare)
- Umeå universitet,Institutionen för fysik,LunaLEC AB, Tvistevagen 47, SE-90719 Umea, Sweden
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(creator_code:org_t)
- 2017-09-05
- 2017
- Engelska.
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Ingår i: Chemistry of Materials. - : American Chemical Society (ACS). - 1520-5002 .- 0897-4756. ; 29:18, s. 7750-7759
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We report on the synthesis, characterization, and application of a series of metal-free near-infrared (NIR) emitting alternating donor/acceptor copolymers based on indacenodithieno[3,2-b]thiophene (IDTT) as the donor unit. A light-emitting electrochemical cell (LEC), comprising a blend of the copolymer poly[indacenodithieno[3,2-b]thiophene-2,8-diyl-alt-2,3-diphenyl-5,8-di(thiophen-2-y1)- quinoxaline-5,5'-diy1] and an ionic liquid as the single-layer active material sandwiched between two air-stable electrodes, delivered NIR emission (lambda(peak) = 705 nm) with a high radiance of 129 mu W/cm(2) when driven by a low voltage of 3.4 V. The NIR-LEC also featured good stress stability, as manifested in that the peak NIR output from a nonencapsulated device after 24 h of continuous operation only had dropped by 3% under N-2 atmosphere and by 27% under ambient air. This work accordingly introduces IDTT-based donor/acceptor copolymers as functional metal-free electroluminescent materials in NIR-emitting devices and also provides guidelines for how future NIR emitters should be designed for further improved performance.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- charge-transport
- highly efficient
- electroluminescent polymers
- conjugated polymers
- field-effect transistors
- diodes
- enhanced photovoltaic performance
- deep-red
- organic electronics
- heterojunction solar-cells
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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