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Chemical doping to ...
Chemical doping to control the in-situ formed doping structure in light-emitting electrochemical cells
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- Huseynova, Gunel (författare)
- Umeå universitet,Institutionen för fysik,Umeå Univ, Dept Phys, Organ Photon & Elect Grp, S-90187 Umeå, Sweden.
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- Ràfols-Ribé, Joan (författare)
- Umeå universitet,Institutionen för fysik,Umeå Univ, Dept Phys, Organ Photon & Elect Grp, S-90187 Umeå, Sweden.
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- Auroux, Etienne (författare)
- Umeå universitet,Institutionen för fysik,Umeå Univ, Dept Phys, Organ Photon & Elect Grp, S-90187 Umeå, Sweden.
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- Huang, Ping (författare)
- Uppsala universitet,Molekylär biomimetik
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- Tang, Shi (författare)
- Umeå universitet,Institutionen för fysik,Umeå Univ, Dept Phys, Organ Photon & Elect Grp, S-90187 Umeå, Sweden.
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- Larsen, Christian (författare)
- Umeå universitet,Institutionen för fysik,Umeå Univ, Dept Phys, Organ Photon & Elect Grp, S-90187 Umeå, Sweden.
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- Edman, Ludvig, 1967- (författare)
- Umeå universitet,Institutionen för fysik,Umeå Univ, Dept Phys, Organ Photon & Elect Grp, S-90187 Umeå, Sweden.
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(creator_code:org_t)
- Springer Nature, 2023
- 2023
- Engelska.
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Ingår i: Scientific Reports. - : Springer Nature. - 2045-2322. ; 13:1
- Relaterad länk:
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https://doi.org/10.1...
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https://umu.diva-por... (primary) (Raw object)
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- The initial operation of a light-emitting electrochemical cell (LEC) constitutes the in-situ formation of a p-n junction doping structure in the active material by electrochemical doping. It has been firmly established that the spatial position of the emissive p-n junction in the interelectrode gap has a profound influence on the LEC performance because of exciton quenching and microcavity effects. Hence, practical strategies for a control of the position of the p-n junction in LEC devices are highly desired. Here, we introduce a "chemical pre-doping" approach for the rational shifting of the p-n junction for improved performance. Specifically, we demonstrate, by combined experiments and simulations, that the addition of a strong chemical reductant termed "reduced benzyl viologen" to a common active-material ink during LEC fabrication results in a filling of deep electron traps and an associated shifting of the emissive p-n junction from the center of the active material towards the positive anode. We finally demonstrate that this chemical pre-doping approach can improve the emission efficiency and stability of a common LEC device.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
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- art (ämneskategori)
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